Show:
addition
subtraction
place value
even/odd
100

Solve:  34 + 55

89

100

100 - 10 

90

100
What is the value of 4 in 457

400

100

17

odd

200

20 + 50

70

200

200 - 100

100

200

What is the value of 7 in 578

70

200

33

odd

300

19 + 21 = 

40

300

25 - 12 

13

300

What is the value of 3 in 389

300

300

26

even