相关试题
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=直接写得数．
500÷5= 2.3+3.4= 9﹣3.5= 89×31≈
80×50= 5.3﹣3.5= 15×20= 587÷3≈
1﹣
= 8+4.7= 125×6= 
=
直接写得数．
81÷9= 730×0= 300+99= 33÷8=
8×60= 400×5= 511+189= 200﹣178=
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= 1﹣
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= 
+
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62×6≈ 38×9≈ 287×7≈ 302×5≈
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= 28÷5= 
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