1) 1251*20=<span>25 020
2)2452*10=</span><span>24 520
3)96300/9=</span><span>10 700
4)9810/90=</span><span>109
5)</span>5*3142*4=<span>62 840
1)3142*4=</span><span>12 568
</span>2)12 568*5=62840
6)21032*5*6=630960
1)5*6=30
2)21032*30=630960
7)15 × 2 × 12 013<span> = </span><span>360 390
</span>1)15*2=30
2)12013*30=360390
8)3 021 × (2 × 5)<span>= </span><span>30 210
</span>1)2*5=10
2)3021*10=30210
Ответ:
Б) 3 8 ÷ (- 6 32 ) = - 3 8 ÷ 6 32 = - 3 8 ÷ 3·2 16·2 = - 3 8 ÷ 3 16 = - 3 8 × 16 3 = - 3·16 8·3 = - 48 24 = - 2·24 24 = -2
Пошаговое объяснение:
8 3/17 * 5 1/4 + 3 14/17 * 5 1/4 = 5 1/4 * ( 8 3/17 + 3 14/17 ) = 5 1/4 * 12 = 21/4 * 12 = 21 * 3 = 63
Ответ 63
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3 4/13 * 15 3/41 - 3 4/13 * 2 3/41 = 3 4/13 * ( 15 3/41 - 2 3/41 ) = 3 4/13 * 13 = 43/13 * 13 = 43
Ответ 43
17-х=8+2
17-х=10
х=17-10
х=7