计算下面各题(能简算的要简算) 23.4-8.54-1.46 15.25-3.1+0.75-4.9 26×101-26 73+3.4+27+5.6
计算下面各题(能简算的要简算)23.4-8.54-1.4615.25-3.1+0.75-4.926×101-2673+3.4+27+5.6363×7+237×7101×3...
计算下面各题(能简算的要简算) 23.4-8.54-1.46 15.25-3.1+0.75-4.9 26×101-26 73+3.4+27+5.6 363×7+237×7 101×39.
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(1)23.4-8.54-1.46, =23.4-(8.54+1.46), =23.4-10, =13.4; (2)15.25-3.1+0.75-4.9, =(15.25+0.75)-(3.1+4.9), =16-8, =8; (3)26×101-26, =26×(101-1), =26×100, =2600; (4)73+3.4+27+5.6, =(73+27)+(3.4+5.6), =100+9, =109; (5)363×7+237×7, =7×(363+237), =7×600, =4200; (6)101×39, =(100+1)×39, =100×39+39, =3939. |
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