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1. 直接写出得数。
70×51 =
8.65+7.34 =
15−7.8 =
5.6+4.4 =
15.3+0.64 =
460÷20 =
0.51+1.7 =
9.57−1.3 =
6.2−6.12 =
12.85−3.6 =
520÷40 =
3.6−1.2 =
13+ 5.7 =
206÷2 =
9.27−1.3 =
0.77+1.33 =
3.2+1.68 =
6.54−0.45 =
796×10 =
8.7+3 =
70×51 =
8.65+7.34 =
15−7.8 =
5.6+4.4 =
15.3+0.64 =
460÷20 =
0.51+1.7 =
9.57−1.3 =
6.2−6.12 =
12.85−3.6 =
520÷40 =
3.6−1.2 =
13+ 5.7 =
206÷2 =
9.27−1.3 =
0.77+1.33 =
3.2+1.68 =
6.54−0.45 =
796×10 =
8.7+3 =
答案
1. 3570 15.99 7.2 10
15.94 23 2.21 8.27
0.08 9.25 13 2.4
18.7 103 7.97 2.1
4.88 6.09 7960 11.7
15.94 23 2.21 8.27
0.08 9.25 13 2.4
18.7 103 7.97 2.1
4.88 6.09 7960 11.7
2. 用竖式计算，带☆的要验算。
309×26=
130×75=
☆5.79+7.8=
25×183=
☆10.73−6.9=
135×92=
309×26=
130×75=
☆5.79+7.8=
25×183=
☆10.73−6.9=
135×92=
答案
2. 8034 9750 13.59
4575 3.83 12420
（竖式及验算略）
4575 3.83 12420
（竖式及验算略）
3. 计算下面各题，能简算的要简算。
357÷51 + 24×32
88×125
713 - 37 - 163
13.72 - 2.9 - 3.4
42×24 + 76×42
10.9 - 8.68 + 2.4
357÷51 + 24×32
88×125
713 - 37 - 163
13.72 - 2.9 - 3.4
42×24 + 76×42
10.9 - 8.68 + 2.4
答案
3. 775 11000 513
7.42 4200 4.62
7.42 4200 4.62
