小学二年级脱式算式
小学二年级脱式算式
小学二年级的脱式计算遵循四则运算的基本规则,即先乘除后加减,有括号先算括号内的内容。下面是一些脱式计算的例子:
1. 89 + 12 + 42
89 + 12 + 42 = 101 + 42 = 143
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2. 24 ÷ 4 × 7
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24 ÷ 4 × 7 = 6 × 7 = 42
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3. 4 × (66 - 58)
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4 × (66 - 58) = 4 × 8 = 32
4. (77 - 71) ÷ 3
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(77 - 71) ÷ 3 = 6 ÷ 3 = 2
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5. 2 × 2 × 5
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6. 12 ÷ 3 × 9
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6. 12 ÷ 3 × 9
12 ÷ 3 × 9 = 4 × 9 = 36
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7. 9 × (5 + 2)
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9 × (5 + 2) = 9 × 7 = 63
4 × (4 ÷ 2) = 4 × 2 = 8