脱式计算,能简便的用简便方法计算
(1)0.4×580﹣195÷6.5 (2)7.6÷1.25÷8 (3)(+)÷﹣
(4)÷﹣× (5)18.64﹣(+4.64) (6)÷[8×(﹣)].
计算:
①+﹣= ②3.2﹣0.85﹣1= ③3.2×﹣÷2= ④1.725×4×0.5=
⑤(+)÷= ⑥1.8×0.72+1.28×1.8= ⑦2÷(﹣)= ⑧57.6÷[(1.25+25%)×0.32]=.
直接写得数.
3.86+2.4= 7.6﹣0.56= 4.5×102= 3.25+2.3+1.75=
361+199= 7÷0.4= 4= =
2.5×32= = 0.1÷0.01= 3.47﹣(2.5+0.47)=
4768÷791≈ 12÷= 1÷== 5.58÷0.78≈
4.98×7.11≈ = =
用你最喜欢的方法计算.
1.25×0.25×32
(0.25+)÷(﹣)
×0.25+×
[(8.7﹣7.5)÷0.2]×0.15
3.75×58.3÷58.3×6.54÷3.75÷65.4
56×(+﹣)
简算下列各题
548+468+52 9.14﹣1.34﹣4.57 77+2.7+2.3+23
3200÷4÷25 125×32×25 2009×95+5×2009.
试题篮
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