《2025年天天练口算四年级数学上册人教版》

按要求画角
135°的角
85°的角
160°的角
50°的角
比直角大 40°的角
以 A 为顶点画一个 60°的角
A•

答案： 答案略

4200 + 3500 = 7700
12 × 40 = 480
450 ÷ 5 ÷ 3 = 30
6900 - 300 = 6600
20 × 60 = 1200
20 + 3 × 6 = 38
380 + 270 = 650
23 × 30 = 690
54 - 27 ÷ 3 = 45
530 - 390 = 140
11 × 70 = 770
42 ÷ 7 + 17 = 23
380 - 270 = 110
19 × 30 = 570
(18 + 30) ÷ 8 = 6
5600 + 1400 = 7000
26 × 20 = 520
39 ÷ 3 × 4 = 52
250 + 290 = 540
48 × 20 = 960
73 + 27 - 19 = 81
5200 - 3800 = 1400
55 × 5 = 275
86 - 19 - 12 = 55
7400 - 3000 = 4400
39 × 20 = 780
0 ÷ (9 × 18) = 0

答案： 4200 + 3500 = 7700
12 × 40 = 480
450 ÷ 5 ÷ 3 = 30
6900 - 300 = 6600
20 × 60 = 1200
20 + 3 × 6 = 38
380 + 270 = 650
23 × 30 = 690
54 - 27 ÷ 3 = 45
530 - 390 = 140
11 × 70 = 770
42 ÷ 7 + 17 = 23
380 - 270 = 110
19 × 30 = 570
(18 + 30) ÷ 8 = 6
5600 + 1400 = 7000
26 × 20 = 520
39 ÷ 3 × 4 = 52
250 + 290 = 540
48 × 20 = 960
73 + 27 - 19 = 81
5200 - 3800 = 1400
55 × 5 = 275
86 - 19 - 12 = 55
7400 - 3000 = 4400
39 × 20 = 780
0 ÷ (9 × 18) = 0