1st Grade Addition
1st Grade Subtraction
Place value
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Skip Counting by 10s
Place Value 2
100
15 + 4 =
1
9
100
8 - 4 =
4
100
What number has 3 tens and 9 ones
39
100
80,90,100 ___, ____,
110,120
100
Count forward by 10s. Start with 1 and stop at 41.
1, 11, 21, 31, 41
100
What number is in the ones place? 234
4
200
12 + 8 =
20
200
14-3
11
200
How many tens and ones in the number 55
5 tens, 5 ones
200
15, 20, ___, _____, ____, ____
25,30,35,40
200
Count by 10s starting with 26. Stop at 66.
26, 36, 46, 56, 66
200
How many tens in 36?
3
300
30 + 10 =
40
300
18-10
8
300
128
300
50, 60, ___, _____, ______, ______, _____
70, 80, 90, 100, 110
300
Count backwards by 10s. Start at 111 and stop at 71.
111, 101, 91, 81, 71
300
If you have 6 tens and 10 ones how much do you have?
70
400
100 + 10 =
110
400
30 - 10 =
20
400
What number has 10 tens and 10 ones
110
400
44, 46, ____, ____, ______, ____
48,50,52,54
400
Count backwards by 10s. Start at 82. Stop at 22.
82, 72, 62, 52, 42, 32, 22
400
How many tens are in 100?
10
500
Addition sentence that equal 19
various answers:
ie: 10 + 9, 11+8,12+7
500
A subtraction number sentence that equals 16.
various answers
ie: 16-0, 17-1,20-4
500
114
500
65, 70, ____, _____, ______, _____,_____ ____
75,80,85,90,95,100
500
Count backwards by 10s starting at 98. Stop at 8.
98, 88, 78, 68, 58, 48, 38, 28, 18, 8
500
Write 120 in expanded form.
100+20