Show:
Mental Math
Addition
Subtraction
Multiplication
Division
100

95-5

90

100

3+5

8

100

2-1

1

100

2 × 9

18

100

5÷5

1

200

80-10-20

50

200

7+6

13

200

13-6

7

200

9 × 3

27

200

90÷10

9

300

30 × 27

810

300

26+8

34

300

39-15

24

300

12 × 7

84

300

91÷7

13

400

200-10-10-10-170

0

400

15+21

36

400

56-17

39

400

15 × 18

270

400

735÷7

105

500

10000÷20

500

500

221+25

246

500

392-141

251

500

20 × 35

700

500

399÷19

21