| 3-9-4 |
| 【答え】小数の暗算（ひき算） |
| （問題更新日：2024/05/17） |
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(1)
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0.8 - 0.6 = 0.2
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(2)
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0.4 - 0.1 = 0.3
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(3)
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0.5 - 0.4 = 0.1
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(4)
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0.9 - 0.8 = 0.1
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(5)
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4 - 0.6 = 3.4
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(6)
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4 - 0.4 = 3.6
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(7)
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5 - 0.2 = 4.8
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(8)
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1 - 0.1 = 0.9
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(9)
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6.5 - 0.9 = 5.6
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(10)
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1.3 - 0.6 = 0.7
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(11)
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6.3 - 0.5 = 5.8
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(12)
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1.3 - 0.4 = 0.9
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(13)
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6.4 - 3.8 = 2.6
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(14)
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8.4 - 4.9 = 3.5
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(15)
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8.5 - 5.6 = 2.9
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(16)
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8.6 - 3.7 = 4.9
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