1 小数乘法
口算小博士.
0.1×0.02= 3.5+7.6= 12﹣6.2﹣3.8= 0.6×1.01=
1.5×0.4= 1.7+0.43+3.3= 500×0.001= 2.56﹣0.37=
5.4﹣2.5﹣1.4= 2.4×2.5= 4.9÷10= 7.5×2.5×4=
口算下面各题.
0.5×1.2= 1.25×0.8= 0.16×0.5=
0.25×4= 3.2×0.5= 0.2×50=
1.1×0.1= 1.7×0.03= 2.4×0.5=
0.12×7=
不计算,运用规律直接填出得数.
1.5×1.5=2.25 2.5×2.5=6.25 3.5×3.5=12.25 4.5×4.5=20.25
5.5×5.5= 6.5×6.5= 7.5×7.5= 8.5×8.5=
直接写出得数.
6.2×0.1= 0.25×4= 0.9×0.7=
8×0.4+8×2.6= 0.05×0.7= 0.68+0.02=
2.3×0.3= 6×0.8×0.125= 1.3﹣0.03=
16×0.25= 0.24×0.5= 0.4×0.7×2.5=
口算题.
0.8×25= 0×4.23= 0.57+0.43= 2.4×0.2=
0.02×50= 2.8×10= 8.29×100= 2.5×0.4=