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Subtraction Meanings
Subtracting on a Hundred Chart
Mental Math
Estimating Differences
Review
100
Pat has 15 pins. Chris has 9 pins. How many more pins does Pat have than Chris? Write a number sentence and answer.
15-9=6 more pins
100
72-40
32
100
26-18
8
100
Round to the nearest hundred to estimate difference. 321-112
200
100
Order the numbers from least to greatest. 987, 978, 898, 989
898, 978, 987, 989
200
A baseball hat costs $12. Nancy has a coupon for $ 4 off. How much money will Nancy spend on the baseball hat? Number sentence and answer.
$12- $4= $8
200
54-29
25
200
34-19
15
200
Round to the nearest hundred to estimate each difference. 255-189
100
200
Order the numbers from greatest to least. 6,576; 6,598; 5,678; 6,988
6,988 6,598 6,576 5,678
300
Write the fact family for 3, 9, and 12.
3+9=12 9+3=12 12-3=9 12-9=3
300
81-58
23
300
42-13=
29
300
Round to the nearet ten to estimate the difference. 370-214
370
300
Used to show order of people or objects.
Ordinal number
400
Peter has 19 crayons and Jada borrowed 8 crayons. Write a number sentence to show how many crayons Peter has left.
19-8= 11 crayons.
400
When you move up 2 rows on a hundred chart how many are you subtracting?
20
400
53-19=
34
400
Round to the nearest ten to estimate the difference. 216-97
120
400
This is an example of what property? 5+3=3+5
Communitive Property
500
Rosa has 9 pens. Kim has 4 pens. How many more pens does Rosa have than Kim?
5 more pens
500
How is subtracting ten on a hundred chart different than adding ten on a hundred chart?
To subtract ten you move up one row. To add ten, you move down one row.
500
To solve 35-19, Jack used 35-20 and then. . . .(what)
added 1
500
John has 338 race cars and Micah has 229 race cars. About how many more race cars does John have than Micah?
100 or 110
500
678 +299 56 _______
1,033