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adding
adding
adding
Doubles
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100

What is 200+50

The answer is 250

100

What is 50+20

The answer is 70

100

 What is 20+80

100

100

30+30

60

100

50-40

10

200

290+12

302

200

230+20

250

200

80+10

90

200

20+20

40

200

20-10

10

300

245+1

246

300

400+50

450

300

90+20

110

300

40+40

80

300

56-40

16

400

40+20

60

400

60+10

70

400

56+0

56

400

10+10

20

400

50-30

20

500

4000+70

4070

500

2000+60

2060

500

1000+200

1200

500

What is 500+200

 700

500

900-200

700