题目内容
9.99×22.2+33.3×3.34.
9.99×22.2+33.3×3.34,
=33.3×6.66+33.3×3.34,
=33.3×(6.66+3.34),
=33.3×10,
=333.
=33.3×6.66+33.3×3.34,
=33.3×(6.66+3.34),
=33.3×10,
=333.
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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. |