Show:
Subtraction (1 Digit)
Addition (1 Digit)
Subtraction (2 Digit)
Addition (2 Digit)
3 Digit Challenge
100

4-1=?

3

100

1+1=?

2

100

10-10=? 

0

100

10 + 10 = ?

20

100

100 + 100 =? 

200

200

5-3=?

2

200

6+0=?

6

200

15 - 10=?

5

200

25 + 10 = ?

35

200

101 + 56 = ?

157

300

8-7 = ?

1

300

2+3=? 

5

300

58 - 40 = ?

18

300

34 + 20 = ?

54

300

230 + 110 = ?

340

400

2-2=?

0

400

5+6=?

11

400

46 - 40=?

6

400

87 + 23 = ?

110

400

500 + 450 = ?

950

500

9 - 6 = ?

4

500

9+8=?

17

500

54-23 = 

31

500

56 + 76 = 

132

500

546 + 127 = ?

673