一、口算。
24÷50 =
43×0.01 =
1.6÷3.2 =
0.15×30 =
0.45 + 2.85 =
0.07×7 =
7÷5 =
25 - 5.6 =
4.8 + 6.2 =
90 - 19 =
360÷20 =
56×101 =
180÷5 =
8.6×0.6 =
9÷18 =
3.1 - 2.5 =
0.8 + 1.32 =
0.78 - 0.6 =
70×0.15 =
5.04÷8 =
25×0.4 =
1.5 - 0.44 =
3.1×0.7 =
8.64 - 5.74 =
2.46 + 3.59 =
0.81 - 0.72 =
0.1÷2 =
0.2×0.4 =
8.3 + 1.7 =
10 - 5.22 =
24÷50 =
43×0.01 =
1.6÷3.2 =
0.15×30 =
0.45 + 2.85 =
0.07×7 =
7÷5 =
25 - 5.6 =
4.8 + 6.2 =
90 - 19 =
360÷20 =
56×101 =
180÷5 =
8.6×0.6 =
9÷18 =
3.1 - 2.5 =
0.8 + 1.32 =
0.78 - 0.6 =
70×0.15 =
5.04÷8 =
25×0.4 =
1.5 - 0.44 =
3.1×0.7 =
8.64 - 5.74 =
2.46 + 3.59 =
0.81 - 0.72 =
0.1÷2 =
0.2×0.4 =
8.3 + 1.7 =
10 - 5.22 =
答案
0.48 0.43 0.5
4.5 3.3 0.49
1.4 19.4 11
71 18 5656
36 5.16 0.5
0.6 2.12 0.18
10.5 0.63 10
1.06 2.17 2.9
6.05 0.09 0.05
0.08 10 4.78
4.5 3.3 0.49
1.4 19.4 11
71 18 5656
36 5.16 0.5
0.6 2.12 0.18
10.5 0.63 10
1.06 2.17 2.9
6.05 0.09 0.05
0.08 10 4.78
二、解方程。
x + 5.6 = 12.3
x - 1.5 = 2.61
4.93 + x = 8
x + 5.6 = 12.3
x - 1.5 = 2.61
4.93 + x = 8
答案
x = 6.7 x = 4.11
x = 3.07
x = 3.07
二、解方程。
x - 6.8 = 7.2
5x = 6.6
x÷2.8 = 4
x - 6.8 = 7.2
5x = 6.6
x÷2.8 = 4
答案
x = 14 x = 1.32
x = 11.2
x = 11.2
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