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脱式计算,能简算的要简算.①2.55÷1.7-0.59②3.7×7.9+3.7×2.1③37×﹙45-23)÷514④34×93+6×0.75+75%
题目详情
脱式计算,能简算的要简算.
①2.55÷1.7-0.59 ②3.7×7.9+3.7×2.1 ③
×﹙
-
)÷
④
×93+6×0.75+75%
①2.55÷1.7-0.59 ②3.7×7.9+3.7×2.1 ③
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7 |
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3 |
5 |
14 |
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4 |
▼优质解答
答案和解析
①2.55÷1.7-0.59
=1.5-0.59
=0.91;
②3.7×7.9+3.7×2.1
=3.7×(7.9+2.1)
=3.7×10
=37;
③
×﹙
-
)÷
=
×
×
=
;
④
×93+6×0.75+75%
=0.75×93+6×0.75+0.75
=0.75×(93+6+1)
=0.75×100
=75.
=1.5-0.59
=0.91;
②3.7×7.9+3.7×2.1
=3.7×(7.9+2.1)
=3.7×10
=37;
③
3 |
7 |
4 |
5 |
2 |
3 |
5 |
14 |
=
3 |
7 |
2 |
15 |
14 |
5 |
=
4 |
25 |
④
3 |
4 |
=0.75×93+6×0.75+0.75
=0.75×(93+6+1)
=0.75×100
=75.
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