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试题原文 |
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(1)12.5×88, =12.5×8×11, =100×11, =1100; (2)42÷0.7÷6, =42÷(0.7×6), =42÷4.2, =10; (3)10.2×35, =(10+0.2)×35, =10×35+0.2×35, =350+7, =357; (4)5.6÷3.5, =(5.6÷7)÷(3.5÷7), =0.8÷0.5, =1.6; (5)7.2×48+52×7.2, =7.2×(48+52), =7.2×100, =720; (6)16.7-0.92-1.08, =16.7-(0.92+1.08), =16.7-2, =14.7; (7)(16.8+1.6)÷4, =16.8÷4+1.6÷4, =4.2+0.4, =4.6; (8)1.8×4.5, =0.9×2×4.5, =0.9×(2×4.5), =0.9×9, =8.1. |
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