★期中检测 3
实际用时:分钟
39÷8 =
660+160 =
930-80 =
150+620 =
70+600 =
51÷7 =
170+330 =
190+400 =
42÷9 =
4×2 =
100+900 =
200+2000 =
310+430 =
30+57 =
76-20 =
62-8 =
84-37 =
280+350 =
600+200 =
3000-600 =
470-220 =
800+1600 =
920-60 =
8000-4000 =
1000+3000 =
36+29 =
64+9 =
400+20 =
260+30 =
80+80 =
1000-300 =
5000+4000 =
8000-6000 =
4000+2000 =
2000-1600 =
130+20 =
320-300 =
600+1000 =
1200+700 =
520-340 =
40+600 =
5×9+8 =
900-300-400 =
260+400+300 =
210+90 =

39÷8 = 4……7
660+160 = 820
930-80 = 850
150+620 = 770
70+600 = 670
51÷7 = 7……2
170+330 = 500
190+400 = 590
42÷9 = 4……6
4×2 = 8
100+900 = 1000
200+2000 = 2200
310+430 = 740
30+57 = 87
76-20 = 56
62-8 = 54
84-37 = 47
280+350 = 630
600+200 = 800
3000-600 = 2400
470-220 = 250
800+1600 = 2400
920-60 = 860
8000-4000 = 4000
1000+3000 = 4000
36+29 = 65
64+9 = 73
400+20 = 420
260+30 = 290
80+80 = 160
1000-300 = 700
5000+4000 = 9000
8000-6000 = 2000
4000+2000 = 6000
2000-1600 = 400
130+20 = 150
320-300 = 20
600+1000 = 1600
1200+700 = 1900
520-340 = 180
40+600 = 640
5×9+8 = 53
900-300-400 = 200
260+400+300 = 960
210+90 = 300

拓展园地

28÷4=7(天)
答：这瓶药够吃7天。