Grade 10 Unit -7 - Spread Sheet Application

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G r a d e -1 0 | | S p r ea d S h e e t A p p l i c a t io n

l e a r n by s el f . c o m

Nju;rr ; p 7: ,yj;jpudpay; tpupjhs; ,yj;jpudpay; tpupjhspd; gzpfs;  fzpjk; kw;Wk; fzf;fPl;NlhL njhlu;Gila fzpj;jy;fis ,yFthf Nkw;nfhs;sy;  tiuGfs; %yk; juTfis tpsf;Fjy;  Njitahd juTfis khj;jpuk; gpupj;njLj;jy;  gzpj;jhs;fis xOq;FgLj;jy;  juTfspd; ek;gfj;jid;ikapid guprPypj;jy; ,yj;;jpudpay; nkd;nghUl;fis cw;gj;jp nra;Ak; epWtdq;fSk; mtw;wpdhy; cw;gj;jp nra;ag;gLk; nkd;nghUl;fspd; ngau;fSk;. nkd;nghUs;

cw;gj;jp nra;j epWtdk;

Excel 2010 Numbers LibreOffice Calc Open Office Calc

Microsoft Cooperation Apple Inc. The Document Foundation Apache Foundation

1. tpupjhs; nkd;nghUis nraw;gLj;jy;/jpwj;jy; Ms Excel 2010 Start →Program →Ms Office→ Ms Office Excel 2010

LibreOffice Calc Start→ Programs→ Libre Office Calc →LibreOffice Calc

2. gzpj;jhs; (Worksheet) gzpj;jhshdJ ,U gupkhzk; nfhz;ll epuy;fs;(Columns) kw;Wk; epiufs;(Rows) fspdhy; mikag;ngw;wpUf;Fk;. gzpj;jhspd; epuyhdJ A, B, C, AA, AAA, …vdTk; gzpj;jhspd; epiuahdJ 1, 2, 3, 4,…….. vdTk; ngauplg;gl;bUf;Fk; gzpj;jhspd; epuy; kw;Wk; epiuapd; FWf;F ntl;lhdJ fyk;(Cell) vd mwpag;gLk;. mf;fykhdJ epuypd; nau; kw;Wk; epiuapd; ngaiuf; nfhz;L mwpag;gLk;. ,J fy Kftup(;Cell Address) vd; miof;fg;gLk cjhuzk;: A1, X26, BC15, gy fyq;fspid ,izj;J fhl;LtJ fy tPr;R(Cell Range) vd;g;gLk;. gpd;tUk; glj;jpy; tpj;jpahrkhd fy tPr;Rf;fs; fhl;lg;gl;Ls;sd (C2:F2), (A1:A6), (C4:E6)

C2:F2(fy tPr;R)

D5 (,J xU fy KftupahFk;)

D4

A1:A6(fy tPr;R)

C4:E6(fy tPr;R)

Excel 2010 kw;Wk; LibreOffice Calc fspy; cs;s epuy;fs; kw;Wk; epiufspd; vz;zpf;if tUkhW epuy;fs; epiufs;

Ms Excel 2010 XFD(214=16384) 1048576

LibreOffice Calc AMJ(210=1024) 1048576

,Wjp epuYf;Fr; nry;y Ctrl + Right Arrow Key ,Wjp epiuf;Fr; nry;y Ctrl + Down Arrow Key tpupjhspd; vt;tplj;jpypUe;jhYk; A1 fyj;jpw;Fr; nry;y Ctrl + Home 3. R+j;jpuq;fis cs;sPL nra;jy; (Formula) fzpg;gPLfis nra;tjw;fhf rkd;(=) milahsj;ij Kjypy; ,l;L ngWkhdq;fs;, fyKftup kw;Wk; jrkjhdk; vd;gtw;iw cl;GFj;jp vOjg;gLk; FwpaPL R+j;jpuk; vdg;gLk;. R+j;jpukhdJ vg;nghOJk; = milahsj;JldNa Muk;gpf;Fk;

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fyj;jpDs; R+j;jpunkhd;wpid cs;sPL nra;fpd;wNghJ mjD}lhf fzf;fplg;gLk; ngWkhdk; fyj;jpDs; njd;gLtNjhL R+j;jpukhdJ R+j;jpu tupapy; njd;gLk;. R+j;jpuq;fis vOjg; gad;gLj;jg;gLk; fzpj;jy; FwpaPLfs; FwpaPLfs; + * / ^

fzpjr; nra;iffs; $l;ly; fopj;jy; ngUf;fy; tFj;jy; tY

4. fy KftupiaAk; FwpaPLfisAk; gad;gLj;jp R+j;jpuq;fis cUthf;fy;. gpd;tUk; tupj;jhspid ftdj;jpy; nfhs;f R+j;jpuk; =A1*C1-E1 =E1-C2/A2 =A2^C2-E8 =A1*C3/C1 =A3/C1+A2*E3 =A2^C3-C2+A3*(E3+C1) =A3/C3*(E2*E1)

KbTfs; 2 2.5 4096 6 50 262228 21.3333333333

=E3/C3/C3*A3+C2

6.8888889

5. fzpj;jYf;F rhu;Gfisg; gad;gLj;jy; (functions)

SUM rhu;G($l;Lj; njhifapid fhz;gjw;fhd rhu;G) gpd;;tUk; re;ju;g;gq;fspy; SUM rhu;ghdJ vOjg;gLk; Kiwfs;  A1, B1, C1 fyq;fspy; cs;s ngWkjpfis $l;Ljy; = SUM (A1:C1) = SUM (A1, B1, C1) 

A1 njhlf;fk; C1 fyq;fspy; cs;sitAld; E5 fyj;jpy; cs;s ngWkjpiaAk; $l;ly; = SUM(A1:C1, E5)



A1 ,ypUe;J C5 tiuahd fyq;fspy; cs;s ngWkjpfis $l;ly; = SUM(A1:C5)



A1 ,ypUe;J A5 tiuAk; kw;Wk; E1 ,ypUe;J E5 tiuAk; cs;stw;iwAk; $l;ly; = SUM(A1:A5, E1:E5)

AVERAGE rhu;G(ruhrupapidf; fhz;gjw;fhd rhu;G) gpd;;tUk; re;ju;g;gq;fspy; AVERAGE rhu;ghdJ vOjg;gLk; Kiwfs;  A1, B1, C1 fyq;fspy; cs;s ngWkjpfspd; ruhrupapid fhzy;. = AVERAGE (A1:C1) = AVERAGE (A1, B1, C1) 

A1 njhlf;fk; C1 fyq;fspy; kw;Wk; E5 fyj;jpy; cs;s ngWkjpfSf;fpilapyhd ruhrupapid fhzy;. = AVERAGE (A1:C1, E5)



A1 ,ypUe;J C5 tiuahd fyq;fspy; cs;s ngWkjpfspd; ruhrupapid fhzy;. = AVERAGE (A1:C5)

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A1 ,ypUe;J A5 tiuAk; kw;Wk; E1 ,ypUe;J E5 tiuAk; cs;s fyq;fSf;fpilapyhd ngWkjpfspd; ruhrupapidf; fhzy; = AVERAGE (A1:A5, E1:E5)

MAX rhu;G(Mff; $ba ngWkjpia fhz;gjw;fhd rhu;G) 

gpd;;tUk; re;ju;g;gq;fspy; MAX rhu;ghdJ vOjg;gLk; Kiwfs; A1, B1, C1 fyq;fspy; cs;s ngWkjpfspy; Mff;$ba ngWkjpapid fhzy;. = MAX (A1:C1) = MAX (A1, B1, C1)



A1 njhlf;fk; C1 fyq;fspy; kw;Wk; E5 fyj;jpy; cs;s ngWkjpfspy; Mff;$ba ngWkjpapid fhzy;.. = MAX (A1:C1, E5)



A1 ,ypUe;J C5 tiuahd fyq;fspy; cs;s ngWkjfspy; Mff;$ba ngWkjpapid fhzy;.. = MAX (A1:C5)



A1 ,ypUe;J A5 tiuAk; kw;Wk; E1 ,ypUe;J E5 tiuAk; cs;s fyq;fSf;fpilapyhd ngWkjpfspy; Mff;$ba ngWkjpapid fhzy; = MAX (A1:A5, E1:E5)

MIN rhu;G(Mff; Fiwe;j ngWkjpapid fhz;gjw;fhd rhu;G) 

gpd;;tUk; re;ju;g;gq;fspy; MIN rhu;ghdJ vOjg;gLk; Kiwfs; A1, B1, C1 fyq;fspy; cs;s ngWkjpfspy; Mff;Fiwe;j ngWkjpapid fhzy;. = MIN (A1:C1) = MIN (A1, B1, C1)



A1 njhlf;fk; C1 fyq;fspy; kw;Wk; E5 fyj;jpy; cs;s ngWkjpfspy; Mff;Fiwe;j ngWkjpapid fhzy;.. = MIN (A1:C1, E5)



A1 ,ypUe;J C5 tiuahd fyq;fspy; cs;s ngWkjfspy; Mff;Fiwe;j ngWkjpapid fhzy;.. = MIN (A1:C5)



A1 ,ypUe;J A5 tiuAk; kw;Wk; E1 ,ypUe;J E5 tiuAk; cs;s fyq;fSf;fpilapyhd ngWkjpfspy; MffFiwe;j ngWkjpapid fhzy; = MIN (A1:A5, E1:E5)

COUNT rhu;G(fyq;fspYs;s ngWkjpfspd; vz;zpf;ifapidf; fhzy;) 

gpd;;tUk; re;ju;g;gq;fspy; COUNT rhu;ghdJ vOjg;gLk; Kiwfs; A1, B1, C1 fyq;fspy; cs;s ngWkjpfspd; vz;zpf;ifiaf; fhzy;. = COUNT (A1:C1) = COUNT (A1, B1, C1)



A1 njhlf;fk; C1 fyq;fspy; kw;Wk; E5 fyj;jpy; cs;s ngWkjpfspd; vz;zpf;ifiaf; fhzy; = COUNT (A1:C1, E5)



A1 ,ypUe;J C5 tiuahd fyq;fspy; cs;s ngWkjpfspz; vz;zpf;ifiaf; fhzy;.. = COUNT (A1:C5)



A1 ,ypUe;J A5 tiuAk; kw;Wk; E1 ,ypUe;J E5 tiuAk; cs;s fyq;fspd;; ngWkjpfspd; vz;zpf;ifia fhzy;. = COUNT (A1:A5, E1:E5)

5. gzpj;jhspid tbtikj;jy; Ms Excel 2010 Home jj;jypy; Font ,d; epwk; tif msT, Alignment, Number tbtikg;G, Style, Cell I ePf;fy;, Nru;j;jy; Nghd;w tplaq;fis ngw;Wf; nfhs;s KbAk;

LibreOffice Calc Standard tool bar/Fomat Menuit gad;gLj;jp Font ,d; epwk; tif msT, Alignment, Number tbtikg;G, Style, Cell I ePf;fy;, Nru;j;jy; Nghd;w tplaq;fis ngw;Wf; nfhs;s KbAk;

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ngWkhdq;fis tbtikg;gjw;fhf fy Kfg;Gf;fis tbtikj;jy; Ms Excel 2010 Home →Number gFjpapd; nrhy;yhlw; ngl;bapid jpwe;jhy; Format Cell nrhy;yhlw; ngl;b Njhd;Wk; mjpy; cs;s tbtikg;Gf;fis gad;gLj;jy;.

LibreOffice Calc Format →Cell nrhy;yhlw; ngl;bapy;; cs;s tbtikg;Gf;fis gad;gLj;jy;.

fytPr;rpy; jrk vz;fis xOq;FgLj;jy; Ms Excel 2010  fy tPr;rpidj; njupT nra;jy;  gpd;du;Home →Number nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Number ,id njupjy;  gpd; Njitahd jrkjhd mstpid toq;fy;.  OK nra;jy;;.

LibreOffice Calc  fy tPr;rpidj; njupT nra;jy;  Format →Cell nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Number ,id njupjy;  gpd; Njitahd jrkjhd mstpid toq;fy;.  OK nra;jy;;. ;.

fytPr;rpid Kfg;G milahskhf(Text) tbtikj;jy; Ms Excel 2010  fy tPr;rpidj; njupT nra;jy;  gpd;du;Home →Number nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Text ,id njupjy;  gpd; OK nra;jy;;.

LibreOffice Calc  fy tPr;rpidj; njupT nra;jy;  Format →Cell nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Text ,id njupjy;  gpd; OK nra;jy;;. ;.

fytPr;rpid rjtPjq;fis njupaf; $bajhf tbtikj;jy; Ms Excel 2010  fy tPr;rpidj; njupT nra;jy;  gpd;du;Home →Number nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Percentage ,id njupjy;  gpd; OK nra;jy;;.

LibreOffice Calc  fy tPr;rpidj; njupT nra;jy;  Format →Cell nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Percent ,id njupjy;  gpd; OK nra;jy;;. ;.

fytPr;rpid ju;f;fuPjpahd ngWkhdkhf tbtikj;jy; Ms Excel 2010  fy tPr;rpidj; njupT nra;jy;  gpd;du;Home →Number nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Scientific ,id njupjy;  gpd; OK nra;jy;;.

LibreOffice Calc  fy tPr;rpidj; njupT nra;jy;  Format →Cell nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Scientific ,id njupjy;  gpd; OK nra;jy;;. ;.

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fytPr;rpid jpfjpfis fhl;lf;$ba tpjkhf tbtikj;jy;

Ms Excel 2010  fy tPr;rpidj; njupT nra;jy;  gpd;du;Home →Number nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Date ,id njupjy; fytPr;rpy; epjpg; ngWkhdq;fis tbtikj;jy;  gpd; OK nra;jy;;.

LibreOffice Calc  fy tPr;rpidj; njupT nra;jy;  Format →Cell nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Date ,id njupjy;  gpd; OK nra;jy;;.

fytPr;rpid Neuj;ijf; fhl;lf;$bathW tbtikj;jy; Ms Excel 2010  fy tPr;rpidj; njupT nra;jy;  gpd;du;Home →Number nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Time ,id njupjy;  gpd; OK nra;jy;;.

LibreOffice Calc  fy tPr;rpidj; njupT nra;jy;  Format →Cell nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Time ,id njupjy;  gpd; OK nra;jy;;.

fytPr;rpid epjpg;ngWkhdq;fis fhl;llf; $bathW tbtikj;jy; Ms Excel 2010  fy tPr;rpidj; njupT nra;jy;  gpd;du;Home →Number nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Currency ,id njupjy;  gpd; OK nra;jy;;.

LibreOffice Calc  fy tPr;rpidj; njupT nra;jy;  Format →Cell nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Number Tab I njupjy;  gpd;du; mjpy; Currency ,id njupjy;  gpd; OK nra;jy;;.

fytPr;rpYs;s ngWkhdq;fis Neu;gLj;jy;(Alignment) Ms Excel 2010  fy tPr;rpidj; njupT nra;jy;  gpd;du;Home →Number nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Alignment Tab I njupjy;  gpd;du; mjpy; nghUj;jkhd Neu;g;gLj;jypidj; njupjy;.;  gpd; OK nra;jy;;.

LibreOffice Calc  fy tPr;rpidj; njupT nra;jy;  Format →Cell nrd;W Format Cell nrhy;yhlw; ngl;bia jpwe;J mjpy; Alignment Tab I njupjy;  gpd;du; mjpy; nghUj;jkhd Neu;g;gLj;jypidj; njupjy;  gpd; OK nra;jy;;.

6. R+j;jpuk; xd;wpid gpujp nra;jy; XU fyj;jpy; jl;lr;R nra;ag;gl;l R+j;jpuj;jpid njhluhf gy fyq;fSf;F gpujp nra;a Ntz;LkhftpUe;jhy; gpd;tUk; ,U topfspy; mJ ,lk;ngWk;. 1. fyj;jpd; epug;Gg; gpbapid(fill handle) gad;gLj;jp 2. gpujp(copy), xl;L(paste) vd;gtw;iwg; gad;gLj;jp 1. fyj;jpd; epug;Gg; gpbapid(fill handle) gad;gLj;jp epug;Gg; gpb(File handle) o o

R+j;jpuk; cs;s fyj;jpidj; njupjy; gpd; fyj;jpd; tyg;gf;f fPo; %iyapy; cs;s epug;Gg; gpbapid fpspf; nra;J Njiahd fyk; tiu ,Oj;J tply;

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2. gpujp(copy), xl;L(paste) vd;gtw;iwg; gad;gLj;jp o o o o

R+j;jpuk; cs;s fyj;jpidj; njupjy; gpd; mjid Copy FwpaPl;bid(ctrl + C) nfhz;L gpujp nra;jy; gpd; R+j;jpuk; Njitahd fy ,ilntspapid njupjy; gpd; xl;ly; Fwpapid gpuNahfpj;jy;(Ctrl + V)

7. rhu;ghd kw;Wk; rhu;gw;w fy Kftup rhu;ghd fy Kftup R+j;jpuk; xd;iw gpujp nra;Ak; NghJ mit cs;slf;Fk; fyKftupfsJ epuy vOj;Jf;fs;, epiu ,yf;fq;fs; khWgLkhapd; mf; fyKftupfs; rhu;ghd fy Kftupfs;(Relative cell reference vdg;gLk;) =A1+B1 vDk; R+j;jpuj;ij epiuapD}lhf gpujp nra;jNghJ =B1+C1 vd epiu khw;wkilfpd;wJ =A1+B1 vDk; R+j;jpuj;ij epuypD}lhf gpujp nra;jNghJ =A2+B2 vd epuy; khw;wkilfpd;wJ rhu;gw;w fy Kftup gpd;tUk; tifahd rhu;gw;w fy Kftupfs; fhzg;gLfpd;wd epiu rhu;gw;w fyKftup r+j;jpuk; xd;iw gpujp nra;Ak; NghJ fy Kftupfspy; epiu ,yf;fq;fs; khwhtpbd; mt;thwhd fyKftupfs; epiu rhu;gw;w fyKftupfs; vdg;gLk; (Row absolute cell references) C1 y; cs;s =A$1+B$1 vDk; R+j;jpuj;ij C2, C3 vDk; epiufSf;F gpujp nra;jNghJ mJ khwhky; =A$1+B$1 vd ,Uf;fpd;wJ. Mdhy; mjid D1, E1 epuy; fyq;f;Sf;F gpujp nra;j NghJ mJ =B$1+C$1, =C$1+D$1 vd khWfpd;wJ. ,jdhyNa ,J epiu rhu;gw;w fyKftup vdg;gLk;. epuy; rhu;gw;w fyKftup epuypD}lhf xU R+j;jpuj;jpid gpujpnra;Ak; NghJ R+j;jpuk; mlq;fpAs;s fyKftupfsJ epuy; vOj;Jf;fs; khwhtpbd; mt;thwhd fyKftupfs; epuy; rhu;gw;w fyKftup vdg;gLk; (Column absolute cell reference) C1 y; cs;s =$A1+$B1 vDk; R+j;jpuj;ij C2, C3 vDk; epiufSf;F gpujp nra;jNghJ mJ =$A2+$B2, $A3+$B3 vd khWfpd;wJ. Mdhy; mjid D1, E1 epuy; fyq;f;Sf;F gpujp nra;j NghJ mJ = $A1+$B1, =$A1+$B1 vd khwhky ,Uf;fpd;wJ. ,jdhyNa ,J epuy; rhu;gw;w fyKftup. epuy; kw;Wk; epiurhu;gw;w fyKftup R+j;jpuk; xd;wpid epiuapD}lhfTk;, epuypD}lhfTk; gpujp nra;fpd;wNghJ mr;R+j;jpuj;jpy; mlq;fpAs;s epiu vOj;J kw;Wk; epuy; vz;fs; khwhtpby; mt;thwhd fyKftupfs; epiu kw;Wk; epiu rhu;gw;w fyKftupfs;(Row and Column absolute Cell references vdg;gLk;) C1 y; cs;s =$A$1+$B$1 vDk; R+j;jpuj;ij C2, C3 vDk; epiufSf;F gpujp nra;jNghJk;, D1, E1 epuy; fyq;fSf;F gpujp nra;jNghJk; mJ khwhky; =$A$1+$B$1, =$A$1+$B$1 vd ,Uf;fpd;wJ. ,jdhyNa ,J epuy; kw;Wk; epiu rhu;gw;w fyKftup vd mwpag;gLfpd;wJ.

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8. tpujhs;fisg; gad;gLj;jp tiuGfisj; jahupj;jy; tpupjhspy; Kd;itf;fg;gLk; vz;juTfis ,yFthf xg;gPl;L Nehf;f, gFg;gha;T nra;a, tpsq;fpf; nfhs;s tupg;glq;fs; gad;gLj;jg;gLk;. gpdtUk; tifahd tupg;glq;fs; tpupjhsy; gad;gLj;jg;gLfpd;wd tiuGfspd; tiffs;

jsf;Nfhyk;

gad;ghL

epuy; tiuG(Column Chart)

gy;NtW juTfis xNu Kiwapy; gFg;gha;T nra;a KbAk;.

Ryhif tiuG(Bar Chart)


Nfhl;L tiuG(Line Chart)


tl;l tiuG(Pie Chart)

gy;NtW juTfis tpfpjhrhukhd Kiwapy; gFg;gha;T nra;a KbAk;. fyg;glkhd juTfis xg;gPl;L mwpa KbAk;

XY rpjwy; tiuG (XY Scatter Chart)

gpd;tUk; cjhuzj;ij mbg;gilahff; nfhz;L tiugpid tiujy;

tiugpid cs;Eioj;jy; MS Excel 2010  tiugpw;fhd fytPr;rj;ij njupjy; cjhuzj;jpd; gb (A1:F3)  Insert →Chart y; tiugpd; tifiaj;; njupjy;  gpd; Njitahd tiuig njupjy;

LibreOffice CalcExcel 2010  tiugpw;fhd fytPr;rj;ij cjhuzj;jpd; gb (A1:F3)  Insert →Chart y; tiugpd; tifiaj;; njupjy;  gpd; Njitahd tiuig njupjy;  Finish nghj;jhid mOj;jy;

tiugpw;F jiyg;gpl MS Excel 2010  tiugpidj; njupjy;  Layout →Chart Title →Above chart  gpd; jiyg;gpid jl;lr;R nra;jy;

LibreOffice CalcExcel 2010  tiugpidj; njupjy;  Insert → Title  gpd; jiyg;gpid jl;lr;R nra;J gpd; OK nra;jy;

khztu;s; ngw;w Gs;spfspid tl;l tiugpy; cl;GFj;j

MS Excel 2010  tiugpw;fhd fytPr;rj;ij njupjy; cjhuzj;jpd; gb (A1:F3)  Insert →Chart → Pie chart

LibreOffice CalcExcel 2010  tiugpw;fhd fytPr;rj;ij njupjy; cjhuzj;jpd; gb (A1:F3)  Insert →Chart → Pie chart y; tiugpd; tifiaj;; njupjy;

Grade 10 Unit -7 - Spread Sheet Application

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