Show:
tens
tens and ones
how many
adding
subtaction
100
3 tens
30
100
1 ten and 4 ones
What is 14
100
10 +2
What is 12
100
9-7
What is 2
200
1 ten
What is 10
200
5 tens and 0 ones
What is 50
200
13
What is one ten and three ones
200
10+10
What is 20
200
15-10
What is 5
300
5 tens
What is 50
300
7 tens 9 ones
What is 79
300
66
What is 6 tens and 6 ones
300
4 tens plus 5 tens
What is 40+50=90
300
20-8
What is 12
400
10 tens
What is 100
400
9 tens and 9 ones
What is 99
400
100
What is ten tens or 100 ones
400
three tens plus 7 tens
What is 30+70=100
400
5 tens minus 7 tens
What is 2 tens(20)
500
12 tens
What is 120
500
5 tens and 10 ones
What is 60
500
120
What is 12 tens or 120 ones
500
10 tens plus 2 tens
What is 100+20=120
500
120-100
What is 20