怎样简便就怎样算7.8×101514÷59×64-159×[34-(716-14)]34×0.53+75%×1.4725×3.2×1.2530514÷1514.-数学
题文
怎样简便就怎样算 7.8×101
25×3.2×1.2530
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答案
(1)7.8×101, =7.8×(100+1), =7.8×100+7.8×1, =780+7.8, =787.8; (2)
=
=41
=40
(3)
=
=
=
=
(4)
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题文
怎样简便就怎样算 7.8×101
25×3.2×1.2530
|
答案
(1)7.8×101, =7.8×(100+1), =7.8×100+7.8×1, =780+7.8, =787.8; (2)
=
=41
=40
(3)
=
=
=
=
(4)
|