小学数学探索某些实物体积的测量方法试题

77×42+23×42             99×15+15               201×24            96×43
49×101﹣49               77×99+77               125×32×25        540÷12÷5
28×111﹣28×11           63×8+91×63+63         24×25             77×63+77×91．

求未知数x．
2x+1.5x=1.75                          x÷2.5=6
7.15×99+7.15                        1.6+8.47÷3.5．

25×3=              23×200=             26﹣26×0=
26÷13=             53×2=               99×13+13=
29×2=              80×125=             28+2×36=

32×30=               850÷170=             30﹣25×8=
600÷12=              560÷28=              90﹣60÷30=
99×101=              15×5=                33×99+33=

计算：
4x﹣7×1.3=9.9                   1：0.4=1.35：X                3﹣×1+
0.9﹣（0.15+0.35÷）            7.25﹣3+3.75﹣6            （2﹣×）÷（+）

脱式计算．
××3                     2÷÷                ×÷
（+）÷                 （﹣）×250%            ﹣（﹣）÷．

计算下面各题，能简算的要简算．
（1）64%×7+36%×7                  （2）÷（﹣60%）÷40%
（3）8×40%+÷                   （4）4.15﹣3.15×10%﹣．

下面各题怎样简便就怎样算
×32×           75%×+0.25÷          99×25       0.6×+60%×+×．

下面各题，能简算的一定要简算
×1.2+×1.8                  （+﹣）×12
36÷[+（﹣）]                 （）×1.25．

下面各题怎样简便就怎样算．
  　        ×+× 　          
101×﹣×21                  （+1.6×）×0.25           ．

脱式计算，能简算的要简算．
（7.6﹣1+80%）÷（1﹣30%）     75%×0.375+1.625×﹣0.75         24﹣4.62﹣5.38
1.25×2.5×32                   [﹣（25%+）]÷10%              ÷[（﹣）×]．

计算下面各题，能简算的要简算．
××              （+）×24               ×101﹣
2012×               ×0.2+0.8×            4×5×（﹣）

下面各题，怎样算简便就怎样算．
6.8÷4﹣1.2×25%+4              ×0.25                  3.7×+5.3×0.75+
38×                          9.9+99.9+999.9　        （+）×24×15．

直接写出得数：
0.77+1.33=             20×70%=              （0.18+9）÷9=
1.87+5.3=              12.6﹣1.7=             200×（1﹣40%）=
×75%=                45÷90%=              ×99+=

下面各题怎样简便就怎样算
（×+）÷（11﹣）              （+×）÷
÷[（+）×2]                        128×﹣×128﹣2÷
×0.375+÷                          ×1+125%+0.625×1.25．