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Shurayuki
@Shurayuki
December 2021
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Вычислите, используя свойства арифметических действий
1.23+21+15+17+39
2.50*16-48*16
3.(100+6)*21
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Answers & Comments
lonrefne
1. = (23+17)+(21+39)+15 = 40+60+15 = 115
2. = (50-48)*16 = 2*16 = 32
3. = 100*21+6*21 = 2100+126 = 2226
22 votes
Thanks 39
Shurayuki
Спасибо!
Brinolf
1. 23+17+21+39+15 = 40+60+15 = 115
2. Выносим 16 за скобку :
16*(50-48) = 16*2 = 32
3. 21*100 + 21*6 = 2100+126 = 2226
17 votes
Thanks 19
Shurayuki
Спасибо!
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Answers & Comments
2. = (50-48)*16 = 2*16 = 32
3. = 100*21+6*21 = 2100+126 = 2226
2. Выносим 16 за скобку :
16*(50-48) = 16*2 = 32
3. 21*100 + 21*6 = 2100+126 = 2226