1. 口算。
12 ÷ 4 = 27 ÷ 3 = 40 ÷ 8 = 630 ÷ 9 =
120 ÷ 4 = 270 ÷ 3 = 400 ÷ 8 = 6300 ÷ 9 =
18 ÷ 3 = 24 ÷ 6 = 45 ÷ 5 = 640 ÷ 8 =
180 ÷ 3 = 240 ÷ 6 = 450 ÷ 5 = 6400 ÷ 8 =
12 ÷ 4 = 27 ÷ 3 = 40 ÷ 8 = 630 ÷ 9 =
120 ÷ 4 = 270 ÷ 3 = 400 ÷ 8 = 6300 ÷ 9 =
18 ÷ 3 = 24 ÷ 6 = 45 ÷ 5 = 640 ÷ 8 =
180 ÷ 3 = 240 ÷ 6 = 450 ÷ 5 = 6400 ÷ 8 =
答案
1. 3 9 5 70 30 90 50 700 6 4 9 80 60 40 90 800
2. 连一连。
$900÷3$ $900÷9$ $80÷2$
40
300
$120÷3$ $600÷2$ $400÷4$
$900÷3$ $900÷9$ $80÷2$
40
$120÷3$ $600÷2$ $400÷4$
答案
3. 列竖式计算。
39 × 5 =
55 × 9 =
78 × 7 =
43 × 4 =
39 × 5 =
55 × 9 =
78 × 7 =
43 × 4 =
答案
195 495 546 172 竖式略
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