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试题原文 |
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(1)5.25×3.6+6
=5.25×3.6+6.4×5.25, =5.25×(3.6+6.4), =5.25×10, =52.5; (2)8
=8.8+5.25+1.2+5.75, =(8.8+1.2)+(5.25+5.75), =10+11, =21; (3)2
=2
=2
=
=12; (4)5.13×
=5.13×0.6-4.63×0.6, =(5.13-4.63)×0.6, =0.5×0.6, =0.3; (5)[1-(
=[1-
=
=
(6)5-
=5-
=5-(
=5-1, =4. |
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