| 15+8= | 0.5+0.4= | 4-0.9= | - = |
× = | 4÷0.8= | 0÷ = | 24×13= |
1- = | 0.45×1000= | 9÷ = | 8.7-7= |
| 786-298= | 3.14×8= | ÷ = | + = |
| 100×1%= | 25×0.7×4= | 2-2÷3= | ( -0.375)×5= |
-
=
×
=
4÷0.8=5 0÷
=0 24×13=3121-
=
0.45×1000=450 9÷
=45 8.7-7=1.7786-298=488 3.14×8=25.12
÷
=
+
=
100×1%=1 25×0.7×4=70 2-2÷3=
(
-0.375)×5=0分析:本题直接根据四则运算法则进行运算.
点评:本题用运算法则直接运算,要看清楚数字和运算符号.