竖式计算,并用计算器验算:
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(3) |
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竖式计算,并用计算器验算:
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(2) |
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(4) |
笔算,并用计算器验算:
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(2) |
(3) |
笔算,并用计算器验算:
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笔算,并用计算器验算:
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笔算,并用计算器验算:
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计算:
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(1)62 ×(205÷5-38) |
(2)28 ×72+28×28 |
计算:
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(1)208 ×8-3060÷30 |
(2)678 +56-78+144 |
计算
(能巧算就巧算):|
(1)(1276 +868)÷32-32 |
(2)81 ×710-71×710 |
计算
(能巧算就巧算):|
(1)108 ×22+778 |
(2)123 ×208 |
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(3)488 +(725+212)+175 |
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