1 小数乘法
直接写数对又快!
1322﹣199= 1.87+5.3= 2.5×2.4= 1÷
﹣
÷1=
4.9×8.1≈ 0.32﹣0.23= 0.9×(99+0.9)=
÷4+4×
=
口算.
7﹣0= 0.125×16= 3﹣1.06= 0.6÷6=
16.8﹣7= 1.01×0.2×0.1= 11﹣1= 1+1=
9﹣9.875= 3.14×8= 2﹣1= 2÷4=
1.625÷1= 0.1+0.2×0.3=
爷爷的药瓶标签上写着“0.1mg(毫克)×50片”,医生开的药方上写着“每天吃2次,每次吃0.3mg,请你帮爷爷算一下,这瓶药能够吃8天吗?为什么?
来源:1 小数乘法
计算.
546﹣398= 457+199= 2.2×101=
32×0.125×25= 5.4×99+5.4= (
+
+
)×21=
999×999+999= 18.7×101﹣18.7=
直接写得数.
39×
×
= 2005+620= 1﹣
+
= 0.25×8.5×4=
+
= 2.68+9﹣2.68+9= 4.8×11﹣4.8= 5﹣1.4﹣1.6=
14÷35= 2﹣
﹣
= 8.75﹣(0.75+3.4)= 1÷
×
=
直接写出得数.
32÷12= 0.5+134= 0.25×145×4= 3.14×22=
6.5×3×15= 0.25×(415×4)= 1617÷8= 35×3.5=
+
×0=
= 0.68+
+0.32=
÷
+0.75×8=
÷
﹣
:
= .
×
+
÷
②1.25×7×0.8 ③7.28﹣3.14+1.72﹣2.86
÷[
﹣(
+
)] ⑤(
+
﹣
)×36 ⑥
+
+
+
.
= 1.8×0.05=
÷6=
×7÷
)×
÷
=
+
)= 1﹣1÷9=
= 2.5×3.5×0.4=
=
= (4)
= .
﹣
+
= (
+
)×24= 4.9×81=
﹣(
=
﹣
)×
= 5×(
)×6=
+
+
+
=
÷
﹣
=
×1
÷
=
)÷6
=
×(1.6+2
) 95.6
+
×18.
= 25×16=
÷4×
= 0.561×100= 9.3×7.9≈ ×0.5=1
×8+
+
÷2=
﹣(
﹣
)]÷
12×(
+
﹣
)
﹣(
+
) 5.82×10.1.
=
﹣
= 5×
÷5×
÷
=
×1.2=
+0.5=
+0.75
×
÷1
×
)×
÷
+0.69+1
18×2
.
×7=
=
=
=
=
=
=
﹣
×
= 4÷
﹣
=
=
=
+
= 7×8×(
+
)= 1﹣
÷
÷
×0=
+
=
÷
=
+
×
= 2×
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