52×43+4点3×28+0点43×20的简便运算?
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答案:
52×43+4.3×28+0.43×20
= 52 x 43 + 4.3 x 28 + 4.3 x 2
= 52 x 43 + 4.3 x (28 + 2)
= 52 x 43 + 4.3 x 30
= 52 x 43 + 43 x 3
= 43 x (52 + 3)
= 43 x 55
= 2365
答案:
52×43+4.3×28+0.43×20
= 52 x 43 + 4.3 x 28 + 4.3 x 2
= 52 x 43 + 4.3 x (28 + 2)
= 52 x 43 + 4.3 x 30
= 52 x 43 + 43 x 3
= 43 x (52 + 3)
= 43 x 55
= 2365
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