Question

100. Qo'shishning guruhlash qonunini qo'llab yig'indini hisoblang: a) (374 + 712) + 626; b) 999+ (901 + 2200); d) (3355+7777)+2223. 101. Yig'indini qulay usulda hisoblang: a) 51 +52 +53 +54 +55 +56 +57 +58; 476 b) 122 + 124 + 126 + 128 + 130 + 132 + 134 + 136 + 138.1176 in d)javobini topib bering

Answer 1

Відповідь:100. а)1712 b)4100. d)13365 101.a)436 b)1170.

Покрокове пояснення:

100. a) (374 + 712) + 626=(626+374)+712=1712

1)626  2)1000

+374   +    712

1000       1712

b) 999+ (901 + 2200)=(999+901)+2200=4100

1)999   2)2200

+901     +1900

1900      4100

d) (3355+7777)+2223=(7777+2223)+3355= 13365

1)7777  2)10010

+2233  +  3355

10010     13365

101. a) 51 +52 +53 +54 +55 +56 +57 +58=436

(54+56)+(53+57)+(52+58)+(51+55)=110*3=330+106=436

b) 122 + 124 + 126 + 128 + 130 + 132 + 134 + 136 + 138=1170

(122+128)+(124+126)+(132+138)+(134+136)+500+540=1040+130=1170

Answer 2

1. Qo'shishning guruhlash qonuni bo'yicha yig'indini hisoblash:

a) (374 + 712) + 626: (374 + 712) = 1086 1086 + 626 = 1712

b) 999 + (901 + 2200): (901 + 2200) = 3101 999 + 3101 = 4100

d) (3355 + 7777) + 2223: (3355 + 7777) = 11132 11132 + 2223 = 13355

2. Yig'indini qulay usulda hisoblash:

a) 51 + 52 + 53 + 54 + 55 + 56 + 57 + 58: Bu sonlarni yig'indisi o'zaro bir-biriga qo'shib ketaveradi: 51 + 52 = 103 103 + 53 = 156 156 + 54 = 210 210 + 55 = 265 265 + 56 = 321 321 + 57 = 378 378 + 58 = 436

Natijada, yig'indi 436 bo'ladi.

b) 122 + 124 + 126 + 128 + 130 + 132 + 134 + 136 + 138: Bu sonlarni yig'indisi o'zaro bir-biriga qo'shib ketaveradi: 122 + 124 = 246 246 + 126 = 372 372 + 128 = 500 500 + 130 = 630 630 + 132 = 762 762 + 134 = 896 896 + 136 = 1032 1032 + 138 = 1170

Natijada, yig'indi 1170 bo'ladi.

3. Javoblar:

a) 1712 b) 4100 d) 13355 a) 436 b) 1170