Show:
Mental Math
Addition
Subtraction
Multiplication
Division
100

10+15+15

40

100

5+1

6

100

7-3

4

100

5 × 3

15

100

10÷2

5

200

5+10+30

45

200

9+8

17

200

17-8

9

200

8 × 7

56

200

25÷5

5

300

100+150+190

440

300

15+2

17

300

25-3

22

300

15 × 3

45

300

100÷5

20

400

189+321

510

400

17+36

53

400

76-54

22

400

14 × 19

266

400

190÷5

38

500

1234+1234

2468

500

182+13

195

500

109-20

89

500

25 × 26

650

500

1000÷50

20