| 用竖式计算。 |
| 3.02 × 4.8 = 7.21 ÷ 0.89 = 0.94 × 0.65 = 5 + 16.2 = 2.06 × 120 = 8.49 ÷ 4.9 = 36.1 ÷ 0.58 = 8.04 - 3.084 = |
| 144.96, 8, 0.611, 21.2, 247.2, 1.73, 62.24, 4.956 |
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○8.677(3)5.4 × 0. 9 ○0.9 × 5.4 (4)0. 728÷ 0.9○0.728(5)
○
(6) 2.5 ×2 ×0.2○2.5 ×0.2 ×2(7)2.5 ×3 ×4○0.5 ×6 ×10 (8)1.3○1.3334(9)1.2 +1.2 +1.2 ○1.2 ×1.2×1.2(10)4(2.5 + a )○4 ×2.5 +4 a(11)5.6÷0.5○5.6×2(12)3. 69 × 0.17○3. 69 +0.17
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a.20[ ]
a.3[ ]
[ ]
a.24.3×3[ ]
a.1.2