题目内容

6+17= 156-156= 4500÷9= 41+18= 3600÷30=
57+43= 48÷12= 1.8+3.5= 7-3.8= 35×60=
35×10= 1500÷10= 0÷46.79= 1.5÷5= 8÷5=
1
4
+
1
4
=
1
2
+
1
2
=
1-
9
10
=
1
2
-
1
3
3
4
-
1
8
=
3-
2
5
=
2
3
×2=
3
10
×
2
3
=
2
5
÷
4
15
=
40×80=
80-17 32×20 75-69= 13×5= 8.7-2.4=
2000+400= 1.4×100= 1.2÷100= 124.6×1= 7.256÷7.256=
1.2÷0.2= 24×10%=
1
3
+0.5=
2+
1
4
=
1
4
+
1
6
=
2
3
÷2=
3
5
÷
3
5
=
1
3
×0.2=
分析:根据整数、小数、分数和百分数加减乘除的计算方法进行计算即可.
解答:解:
6+17=23, 156-156=0, 4500÷9=500, 41+18=59, 3600÷30=120,
57+43=100, 48÷12=4, 1.8+3.5=5.3, 7-3.8=3.2, 35×60=2100,
35×10=350, 1500÷10=150, 0÷46.79=0, 1.5÷5=0.3, 8÷5=1.6,
1
4
+
1
4
=
1
2
1
2
+
1
2
=1,
1-
9
10
=0.1,
1
2
-
1
3
=
1
6
3
4
-
1
8
=
5
8
3-
2
5
=2.6,
2
3
×2=
4
3
3
10
×
2
3
=0.2,
2
5
÷
4
15
=
3
2
40×80=3200,
80-17=63, 32×20=640, 75-69=6, 13×5=65, 8.7-2.4=6.3,
2000+400=2400, 1.4×100=140, 1.2÷100=0.012, 124.6×1=124.6, 7.256÷7.256=1,
1.2÷0.2=6, 24×10%=2.4,
1
3
+0.5=
5
6
2+
1
4
=2.25,
1
4
+
1
6
=
5
12
2
3
÷2=
1
3
3
5
÷
3
5
=1,
1
3
×0.2=
1
15
点评:口算时,注意运算符号和数据,然后再进一步计算.
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