用简便方法计算下面各题. (1)198+214+202+386 (2)473-65-35 (3)88×125 (4)99×58+58 (5)8600÷25÷4 (6)83×15-15×13
编辑:chaxungu时间:2026-04-27 13:19:39分类:小学数学题库
用简便方法计算下面各题。
| (1)198+214+202+386 | (2)473-65-35 | | (3)88×125 | (4)99×58+58 | | (5)8600÷25÷4 | (6)83×15-15×13 |
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(1)198+214+202+386 =(198+202)+(214+386) = 400+600 =1000 | (2)473-65-35 = 473-(65+35) = 473-100 =373 | (3)88×125 =80×125+8×125 =10000+1000 =11000 | (4)99×58+58 =(99+1)×58 =100×58 =5800 | (5)8600÷25÷4 =8600÷(25×4) =86 | (6)83×15-15×13 =15×(83-13) =1050 |
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