脫式計算,能簡算的要簡算. (1)(125+8)×8 |
(2)25×13×4 | (3)18.8-4.125-5.875 | ||||||||||||||||||||||
(4)
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(5)[1-(
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(6)
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(2)25×13×4, =25×4×13, =100×13, =1300; |
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