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105×( + + )
(3618÷18﹣145)×29
﹣4.5÷(0.2+ )
11.3﹣3.79+8.7﹣7.21.
①4.65﹣2.55﹣1.45
②6.4÷(0.3×2+0.2)
③6.5×99
④2.2×0.25+2.8×0.25.
①45.55﹣(6.82+15.55)
②27.38﹣5.34+2.62﹣4.66
③4.3×4.3+5.7×4.3
④12.8÷[(22.5﹣6.5)×0.5]
⑤26.7﹣0.5×0.5﹣0.75
⑥7.75×[20÷(3.24﹣3.04)]
①10.1×87
②6.3+0.84+3.7+8.16
③9.83×1.5+6.17×1.5
④0.8×630×0.125.
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