①47.86×11﹣47.86
②2.25×1.8+77.5×0.18
③7.28﹣(1.28+0.25)
④14÷〔 ﹣( + )〕
①25×32×125
②198×8+198×2
③21.54+6.28-9.54+3.72
④3900÷5÷20
⑤(513+36×3)÷23
⑥12.39-(8.39+0.56)
①60-(3.7+0.75+8.6)
②4.64+5.78+1.36+5.22
③28.29-(6.9+18.29)
④37.15-8.3- (在 里添上一个数,可以使计算简便)
⑤8.3+5.85-4.13
⑥55.5-33.18-10.82
①83+6.4+17+3.6
②15.89+14.72-5.89
③43000÷125÷8
④35×[300÷(53-38)]
⑤(125+70)×8
⑥25×36
①100-1.7×1.4
②85.6+1.7-46
③3.78+(6.22+4.72)
④26.75-3.42-2.58
⑤1.47×2.9+5.3×0.29
⑥12.5×2.5×3.2
①100-14.6-28.2
②7.23-5.5-7.23+5.5
③95×101-95
④25×47×4
⑤5000÷125÷8
⑥[175-(49+26)]×24