Place Value
Parts of 100
Estimate
What two numbers?
Addition and Subtraction Patterns
Adding Tens and Ones
Subtracting Tens and Ones
100
What number is in the ones? 54
4
100
90 and ____________is 100.
10
100
Estimate. What is the closest ten to the number 44?
40
100
Continue the pattern. What are you adding or subtracting by? 2, 4, 6, 8, _____, ______, ________,_________
2,4, 6, 8, 10, 12, 14, 16 Add 2
100
What is 41+4?
45
200
What number is in the tens? 38
3
200
70 and ___________is 100.
30
200
Estimate. What is the closest ten to the number 79?
80
200
What two numbers will make 40? 19 10 30 21
19 and 21 10 and 30
200
What is 24-10?
14
300
This number has 7 tens and 5 ones. What number is it?
75
300
85 and __________is 100.
15
300
Estimate. Show your work. 90-32 is more or less than 50.
90 60 is MORE than 50. -30
300
What two numbers make 90? 65 47 25 43
43 and 47 65 and 25
300
What is 23+63?
86
400
This number has 9 tens and 9 ones. What is the number?
99
400
20 and ___________is 100.
80
400
Estimate. Show your work. 80-69 is more or less than 20.
80 10 is less than 20. -70
400
Continue the pattern. What are you adding or subtracting by? 32, 30, 28, 26, 24, _____, _______, _______, _______
32, 30, 28, 26, 24, 22, 20, 18, 16 Subtract 2
400
What is 85-31?
54
500
How many tens and ones are in the number 26?
2 tens and 6 ones
500
5 and __________is 100.
95
500
Estimate. What is the closest ten to 55?
60
500
Continue the pattern. What are you adding or subtracting by? 6, 12, 18, 24, 30, ______, ______, ______, ______
6, 12, 18, 24, 30, 36, 42, 48, 54 Add 6
500
What is 93-30?
63
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