Show:
Addition
Subtraction
What number comes next?
What Number comes before?
How many tens and how many ones?
100
3+5
What is 8
100
3-0
What is 3
100
11 _
What is 12
100
_ 3
What is 2
100
21
What is 2 tens and 1 extra ones
200
5+5
What is 10
200
10-3
What is 7
200
17_
What is 18
200
_ 15
What is 14
200
36
What is 3 tens and 6 extra ones
300
1+8
What is 9
300
8-4
What is 4
300
45 _
What is 46
300
_ 51
What is 50
300
17
What is 1 ten and 7 extra ones
400
7+8
What is 15
400
7-6
What is 1
400
77 _
What is 78
400
_ 65
What is 64
400
10
What is 1 ten and 0 extra ones
500
11+9
What is 20
500
10-3
What is 7
500
82 _
What is 83
500
_ 99
What is 98
500
50
What is 5 tens and 0 extra ones