题目内容
脱式计算(能简算要简算)
| (1)(66-32×1.2)÷0.25 | (2)10×
| ||||
(3)0.25×(5
| (4)9.99×22.2+33.3×3.34. |
(1)(66-32×1.2)÷0.25,
=(66-38.4)÷0.25,
=27.6÷0.25,
=110.4,
(2)10×
+17×75%-7×0.75,
=10×0.75+17×0.75-7×0.75,
=(10+17-7)×0.75,
=20×0.75,
=15,
(3)0.25×[5
×(3-2.5×
)],
=0.25×[5
×(3-
)],
=0.25×[5
×
],
=
×
×
,
=1
,
(4)9.99×22.2+33.3×3.34,
=9.99×11.1×2+11.1×3×3.34,
=11.1×(9.99×2+3×3.34),
=11.1×(19.98+10.02),
=11.1×30,
=333.
=(66-38.4)÷0.25,
=27.6÷0.25,
=110.4,
(2)10×
| 3 |
| 4 |
=10×0.75+17×0.75-7×0.75,
=(10+17-7)×0.75,
=20×0.75,
=15,
(3)0.25×[5
| 1 |
| 5 |
| 7 |
| 8 |
=0.25×[5
| 1 |
| 5 |
| 35 |
| 16 |
=0.25×[5
| 1 |
| 5 |
| 13 |
| 16 |
=
| 1 |
| 4 |
| 26 |
| 5 |
| 13 |
| 16 |
=1
| 9 |
| 160 |
(4)9.99×22.2+33.3×3.34,
=9.99×11.1×2+11.1×3×3.34,
=11.1×(9.99×2+3×3.34),
=11.1×(19.98+10.02),
=11.1×30,
=333.
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