题目内容

计算下列各题。(能简算的要简算)
(1)101×8.7 (2)6.3+0.84+3.7+8.16
(3)42×1.7-32×1.7 (4)12×0.86+12×4.14
(1)原式=(100+1)×8.7
                =870+8.7
                =878.7
(2)原式=6.3+3.7+(0.84+8.16)
                =10+9
                =19
(3)原式=(42-32)×1.7
                =10×1.7
                =17
(4)原式=12×(0.86+4.14)
                =12×5
                =60
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