期中检测
★期中检测4
建议用时:6分钟
实际用时:分钟
300+400 =
280-200 =
70+140 =
260-130 =
950-720 =
30+90 =
270-130 =
1000-600 =
750-340 =
600+400 =
1000-800 =
290+350 =
770-130 =
1000+6000 =
900-400 =
970-430 =
260+30 =
370+220 =
480+50 =
5000-1000 =
920-20 =
60+600 =
870+130 =
270-80 =
830-290 =
350-170 =
210+80 =
420+370 =
570-240 =
2000+600 =
90+300 =
2700+200 =
960-60 =
2000+3000 =
2000+600 =
170+380 =
670-40 =
190-30+40 =
120+60-30 =
220+10+30 =
9000-600-2000 =
5×6+400 =
300+90-40 =
80+180+300 =
1000-600+200 =

300+400 = 700
280-200 = 80
70+140 = 210
260-130 = 130
950-720 = 230
30+90 = 120
270-130 = 140
1000-600 = 400
750-340 = 410
600+400 = 1000
1000-800 = 200
290+350 = 640
770-130 = 640
1000+6000 = 7000
900-400 = 500
970-430 = 540
260+30 = 290
370+220 = 590
480+50 = 530
5000-1000 = 4000
920-20 = 900
60+600 = 660
870+130 = 1000
270-80 = 190
830-290 = 540
350-170 = 180
210+80 = 290
420+370 = 790
570-240 = 330
2000+600 = 2600
90+300 = 390
2700+200 = 2900
960-60 = 900
2000+3000 = 5000
2000+600 = 2600
170+380 = 550
670-40 = 630
190-30+40 = 200
120+60-30 = 150
220+10+30 = 260
9000-600-2000 = 6400
5×6+400 = 430
300+90-40 = 350
80+180+300 = 560
1000-600+200 = 600

拓展园地
在里填上合适的数字。
2
- 4
------
2
+ 6
------
6 2
4
- 3 8
------
4 6
+
------
7 1

$\boldsymbol{\begin{array}{r} \boldsymbol{7} \ 2\\ - \ 4 \ \boldsymbol{5}\\ \hline 2 \ \boldsymbol{7}\\ + \ \boldsymbol{3} \ 6\\ \hline 6 \ 2\end{array}}$
$\boldsymbol{\begin{array}{r} \boldsymbol{8} \ 4\\ - \ 3 \ 8\\ \hline 4 \ 6\\ + \ \boldsymbol{2} \ \boldsymbol{5}\\ \hline 7 \ 1\end{array}}$