Subtract 7,8, or 9 for 1st Grade Worksheets

There are four sets of “subtraction within 20” worksheets:
Subtract 9 (eg. 16 - 9)
Subtract 8 (eg. 17 - 8)
Subtract 7, 8, or 9
Subtraction with numbers < 20 (eg. 17 - 6)

Subtract 7,8, or 9 for 1st Grade Worksheets

When subtracting 7,8, or 9 from a teen number (a number between 10 and 19), you can use the following method.
Let’s look at some examples:

Examples:

1. Subtract 7 from 19:
   19 - 7 can be done in 2 steps
   10 - 7 = 3
   9 + 3 = 12
   So, 19 − 7 = 12

2. Subtract 8 from 17:
   17 - 8 can be done in 2 steps
   10 - 8 = 2
   7 + 2 = 9
   So, 17 − 8 = 9

3. Subtract 8 from 11:
   11 - 8 can be done in 2 steps
   10 - 8 = 2
   1 + 2 = 3
   So, 11 − 8 = 3

After some practice, the student may recognize the pattern of adding 3 when subtracting 7, adding 2 when subtracting 8 and adding 1 when subtracting 9. This approach is particularly useful for mental math, and it helps students develop their understanding of numbers and basic subtraction concepts.

Have a look at this video if you need help subtracting 7, 8, or 9 from teen numbers.

• Subtract 7, 8, or 9 from Teen Numbers

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Scroll down the page for more Subtract 7, 8, or 9 for 1st Grade Worksheets.

 

More Subtract 7,8, or 9 for 1st Grade Worksheets

(Answers on the second page)
Subtract 7, 8, or 9 for 1st Grade Worksheet #1
Subtract 7, 8, or 9 for 1st Grade Worksheet #2

Sprint Practice
Subtract 7, 8, or 9 for 1st Grade Worksheet #3
Subtract 7, 8, or 9 for 1st Grade Worksheet #4

Related Worksheets

Subtract 7,8, or 9 from Teen Numbers Lesson

Subtract from 9 (eg. 9 - 5)
Subtract from 10 (eg. 10 - 6)
Subtraction with numbers within 10 (eg. 8 - 2)
Subtraction Word Problems within 10

More Printable Worksheets

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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