小学数学探索某些实物体积的测量方法解答题

能简算的要简算：
①9.1﹣1.2÷6﹣6.24      ②4.7×10.2             ③0.88×4.9+0.88×5.1
④2.5×8×0.4×0.125     ⑤（5.63﹣1.88）×0.2    ⑥0.25×43.7×4．

脱式计算．
①6.4÷（0.3×2+0.2）
②68.1﹣77.7÷0.7×0.5
③3.5×5.2+0.35×48
④4.05÷0.81+2.4．

计算下面各题能简算的要简便计算．
32÷（11.08﹣1.48）×0.8      
11.1×3.58+11.1×5.42
﹣+
3+﹣+．

计算下列各题，要写出主要计算过程，能简算的要用简便方法计算．
①24÷0.2×1.6            ②1.9×2.6+2.6×0.1         ③5.1+34.1÷2.2
④0.21×99+0.21           ⑤88.5÷0.8÷125            ⑥1.85×201．

1÷（1﹣0.99）=            0.2×[（1﹣0.6）÷2.5]=         0.25×1.25×32=
13.5﹣1.96﹣1.04=          9.8×0.35+0.35×0.2=

用递等式计算下列各题（①、②要简算，并写出简算过程）．
①56.8﹣6.85﹣13.15             
②2.5×44
③12.36﹣2.5×1.6               
④57.6×（8.9﹣5.4）÷15．

能简算的要简算．
3.2×1.25×0.25             5.8×[1÷（2.1﹣2.09）]          ×101﹣．

脱式计算（能简算的要简算）
17.64÷4.9+6.73     3.4÷[（1.2+0.5）×5]     1.9+19.9+199.9+0.3      0.25×12.5×3.2．

脱式计算（怎样算简便就怎样算）．
（18.6﹣18.6÷3.1）×1.6
12.5×2.5×3.2
4.5÷18 
32.9×0.46+5.4×3.29．

脱式计算．
4.27﹣1.72+0.73﹣2.28               1.25×8.37×0.8
7.8﹣7.8÷（1.3×1.5）              5.28+5.28×9．

脱式计算 （能简算的要简算）．
72.8÷5.6+1.49       58.1﹣29.7÷3           30.94﹣5.09﹣4.91
3.94+34.3×0.2       5.4×2.3+5.4×7.7       3.2×12.5×0.25．

计算下面各题，怎样简便怎样计算
6.89+4.7+2.11+5.3          125×25﹣125×17             7.46﹣2.37﹣1.63
14﹣（3.65+0.24）          6400÷25÷4                 （275﹣35）÷（17+43）

〔0.5+（2﹣0.75）〕×1.6          10.73﹣4.76﹣5.24
17.4×2.43﹣1.43×7.4            2.2+（4.72﹣2.8）÷0.4．

用递等式计算．
1.56﹣0.45+0.55               3.9+0.56+6.1+0.44            3.2+9.6÷0.32
3.12+3.12×99                 1.25×3.2×25                4.75×[60÷（3.24﹣3.04）]．

用你喜欢的方法递等式计算
1.76×6.5﹣1.76×5.5             70﹣29.6﹣10.4
0.175÷2.5÷0.4                 （20﹣1.4÷2）×0.4．