一、计算题
1、直接写出得数。
0.45×2.5= 0.8×1.25= 0.3×3.6= 0.3×0.3=
10×0.07= 0.3×1.4= 0.05×7= 0.92×0.4=
0.2×0.26= 0.14×4= 0.02×0.1= 1.2×0.3=
0.2×0.4= 8.2+1.8= 100-35.22= 2.3×4=
2.5×0.4= 2.4×5= 0.22×4= 3.25×0=
0.9-0.52= 3.99×1= 0×3.52= 12.5×8=
8÷10 = 10-1.8-7.2= 0.43+3.57= 2.5×4×12=
0.9×0.8= 1.05×100= 1÷0.5= 0.96÷3=
1.47÷0.7= 5.4÷6= 0.16.5×10= 0.56×100= 3.78×100= 4÷0.8 = 3.215×100= 0.8×10=
4.08×100= 1.1×0.2 = 0.6×0.8 = 3×0.9=
2.5×0.4= 3.6×0.4= 2.5×40= 50×0.04=
80×0.3 = 1.1×9= 0.16×5 ﹦ 1.78+2.2 =
9.6÷0.6 = 1.2×0.5-0.4 = 0.7÷0.01 = 2.5×0.4 =
12-3.9= 1.25×8÷1.25 = 6.6÷0.66 = 5.37×0+4.63 =
3.9+2.03= 4.2÷3.5= 1.6+2.4×0.3 = 2.14-0.9=
0.3×0.3= 7.2+2.8= 0.9÷0.01= 12÷0.3=
2.87÷0.7= 13÷4= 0.96÷0.3= 7÷0.25=
2.5×0.7×0.8= 8-2.5= 16÷1.6= 5.6×1.01=
8×(2.5+0.25)= 0.36+0.64=
64.32÷16= 4.2÷0.1=
72.8÷0.8= 8.4÷4.2= 13.8+9.9= 2.4×2.5=
0.05×0.8= 2.56-0.37= 1.25×0.8×0.5= 12×2.5=
1.23×3= 3.2÷1.6= 3.5+3.5×3= 2.2÷0.11=
19.6÷2= 8.8÷2.2= (1.5+0.25)×4= 0.5×0.8=
8.4×0.2= 0.9÷0.15= 1.8×0.4= 5.5÷0.55=
小数乘除法计算
1.计算
0.396÷1.2= 0.756÷0.36= 15.6×13=
0.18×15= 0.025×14= 3.06×36=
0.04×0.12= 3.84×2.6≈ 5.76×3=
(保留一位小数)
7.15×22 90.75÷3.3 3.68×0.25
16.9÷0.13 1.55÷3.9 3.7×0.016
13.76×0.8= 5.2×0.6 8.4×1.3
6.4×0.5 4.48×0.4 5.25×5
35.4×4.2 0.042×0.54 0.76×0.32
0.25×0.046 2.52×3.4 1.08×25
0.12×0.5×0.16= 4.8×0.25= 0.125×1.4≈
(保留两位小数)
2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)
10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)
2、脱式计算(能简算的要简算)
2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9
2.8×0.5+1.58 32+4.9-0.9 (1.25-0.125)×8
4.8×100.1 56.5×99+56.5 7.09×10.8-0.8×7.09
8.7 × 17.4 - 8.7 × 7.4 9.5×101
12.5×0.4×2.5×8 0.87×3.16+4.64
