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脱式计算,看看你从中发现了什么?
(1)1-0.45-0.55 (2)5.04-1.53-1.04
(3)7.15-1.35-1.65 (4)2.58-2.09+6.42
(5)26×50×2 (6)10-0.53-2.47
(7)60.75-(7.8+0.75) (8)3.5+4.21+1.5
(1)原式=0.55-0.55
                =0
(2)原式=3.51-1.04
                =2.47
(3)原式=5.8-1.65
                = 4.15
(4)原式=0.49+6.42
                =6.91
(5)原式=1300×2
                =2600
(6)原式=9.47-2.47
                =7
(7)原式=60.75-8.55
                =52.2
(8)原式=7.71+1.5
                =9.21
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