Maths NCERT

1. v/;k; & 7 D;k rqEgsa iSVuZ fn[kk
iz’u 1- vkxs D;k vkuk pkfg,
iz'u 2- bl iSVuZ dks ns[kks & bl iSVuZ dk fu;e gS %
450
dk ?kqeko gj ckjA vxyk D;k gksuk pkfg, lgh ¼½ dk fu’kku yxkvks
¼½
blh fu;e dk bLrseky djrs gq, rc rd vkxs c<krs tkvks tc rd 'kq: dk
fp= fQj u vk tk, &

2. iz’u 3- yky js[kk ds ckbZa vksj uhps dqN iSVuZ fn, x, gSaA gj iSVuZ ds fy, fu;e
fy[kksA fu;e dk bLrseky djrs gq, vkxs D;k vk,xk mls nkfguh vksj ls pquks
vkSj fu’kku yxkvks &
iz’u 4- bl oxZ dks 46 ls 54 rd dh la[;kvksa ls HkjksA fu;e gj iafDr dk tksM+ 150
gSA
49 53 48 49
46 46 50 54
52 47 51 52 47

3. iz’u 5- bl oxZ dks 21 ls 29 rd dh la[;kvksa ls HkjksA fu;e gj iafDr dk tksM+ 75
gSA
22 27 26
25 29 25 21
24 23 28
iz'u 6- tknqbZ "kVdks.k
uhps fn, "kV~dks.k dks Hkjus ds fy;s blh fu;e dk iz;ksx djksA
iz’u 7- la[;k,sa gh la[;k,sa
¼1½ D;k ;s cjkcj gSa mRrj & gk¡

4. ¼2½ [kkyh LFkku dks blh rjg Hkjks &
¼3½ vc bls ns[kks
tkap djks fd ;g Bhd gS ;k ughaA & mRrj & gk¡ Bhd gSA
iz’u 8- dqN vkSj la[;k iSVuZ &
¼1½ dksbZ Hkh la[;k yks mls ckjh&ckjh ls 2] 3] 4 ] --------------------- ls xq.kk djksA gj
ckjh esa 3 Hkh tksMksA mRrj esa fdruk varj vkrk gS D;k ;g varj gj ckjh esa
,d tSlk gS

5. ¼2½ uhps nh xbZ la[;kvksa dks ns[kksA iSVuZ dks /;ku ls ns[kksA D;k rqe bls vkxs c<k
ldrs gks
(9 - 1) ÷ 8 = 1
(98 - 2) ÷ 8 = 12
(987 - 3) ÷ 8 = 123
(9876 - 4) ÷ 8 = 1234
(98765 - 5) ÷ 8 = 12345
(987654 - 6) ÷ 8 = 123456
(9876543 - 7) ÷ 8 = 1234567
iz'u 10- LekVZ tksM+
D;k blds mRrj esa dksbZ iSVuZ utj vkrk gS gk¡
iz'u 11- fo"ke la[;kvksa dk etk & igyh nks fo"ke la[;k,sa yksA vc mUgsa tksMksA ns[kks
D;k mRrj vkrk gS vc gj ckj vxyh fo"ke la[;k tksMrs tkvks &

6. iz’u 12- cw>ks esjh la[;k vkSj mRrj nks &
¼1½ ;g 100 ds vk/ks ls cMk gS
;g 6 ngkbZ ls T;knk vkSj 7 ngkbZ ls de gSA
ngkbZ dk vad bdkbZ ds vad ls ,d vf/kd gSA
la[;k ds vadksa dk tksM+ 11 gSA
¼2½ ;g 100 ds vk/ks ls NksVk gSA
;g 4 ngkbZ ls T;knk vkSj 5 ngkbZ ls de gSA
ngkbZ dk vad bdkbZ ds vad ls nks vf/kd gSA
vadksa dk tksM+ 6 gSA
viuh lksph gqbZ la[;k ds fy, ladsr fy[kksA fQj mls vius nksLr dks nsdj mls
og lksph gqbZ la[;k tkuus dks dgksA
iz’u 13- la[;kvksa dk tknw
¼d½ vius nksLr dks dgks & viuh vk;q fy[kks mlesa 5 tksMksA tksM dks 2 ls xq.kk
djks mlesa ls 10 ?kVkvksA fQj 2 ls Hkkx nks rqEgsa D;k feyk
mRrj & 15 + 5 = 20 x 2 = 40 – 10 = 30 » = 15
D;k rqEgkjk nksLr gSjku gS gk¡
¼3½
¼?k½ nh xbZ la[;kvksa dss iSVuZ dks <wa<+ks vkSj vkxs c<kvks
1 = 1 x 1
121 = 11 x 11
12321 = 111 x 111
1234321 = 1111 x 1111
¼M+½ ,sls gh viuk la[;kvksa dk tknw cukvksA
esjh lksph gqbZ
la[;k D;k gS
mRrj & 65
esjh lksph gqbZ
la[;k D;k gS
mRrj & 42