登录
一、口算。
209 + 14 =
84 + 34 =
420 ÷ 21 =
70 × 80 =
700 ÷ 35 =
540 - 60 =
840 ÷ 6 =
81 - 62 =
23 × 40 =
4000 ÷ 8 =
26 + 84 =
50 × 24 =
34 × 20 =
180 ÷ 60 =
560 - 40 =
84 ÷ 2 =
6 × 25 =
357 ÷ 7 =
56 - 37 =
225 ÷ 15 =
120 - 80 =
630 ÷ 30 =
700 × 13 =
440 ÷ 22 =
402 × 3 =
32 × 40 =
306 ÷ 9 =
72 - 27 =
45 × 60 =
19 × 80 =
209 + 14 =
223
84 + 34 =
118
420 ÷ 21 =
20
70 × 80 =
5600
700 ÷ 35 =
20
540 - 60 =
480
840 ÷ 6 =
140
81 - 62 =
19
23 × 40 =
920
4000 ÷ 8 =
500
26 + 84 =
110
50 × 24 =
1200
34 × 20 =
680
180 ÷ 60 =
3
560 - 40 =
520
84 ÷ 2 =
42
6 × 25 =
150
357 ÷ 7 =
51
56 - 37 =
19
225 ÷ 15 =
15
120 - 80 =
40
630 ÷ 30 =
21
700 × 13 =
9100
440 ÷ 22 =
20
402 × 3 =
1206
32 × 40 =
1280
306 ÷ 9 =
34
72 - 27 =
45
45 × 60 =
2700
19 × 80 =
1520
答案
223 118 20 5600 20 480 140 19 920 500 110 1200 680 3 520 42 150 51 19 15 40 21 9100 20 1206 1280 34 45 2700 1520
二、计算下面平行四边形的面积。
答案
63×25=1575(m²) 26×12=312(dm²)
