Subtraction Within 10

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Answer Key & Explanations

Subtraction Within 10 · Grade 1 · Worksheet 2

1. Lily has 8 cookies. Lily eats 7 cookies. How many cookies are left? Answer: 1 Solution: Lily begins with 8 cookies. Remove the 7 cookies that were eaten: 8 - 7 = 1.
   Full step-by-step solution

   Step 1: Lily begins with 8 cookies. Step 2: Remove the 7 cookies that were eaten: 8 - 7 = 1. The answer is 1 cookies.

2. Emma had 7 crayons in her box. She used 2 crayons to draw a picture. How many crayons are left in Emma's box? Answer: 5 Solution: Emma started with 7 crayons. She used 2 crayons for her drawing. To find how many are left, subtract the crayons used from the total: 7 - 2 7 - 2 = 5 Emma has 5 crayons left in her box.
   Full step-by-step solution

   Step 1: Emma started with 7 crayons. Step 2: She used 2 crayons for her drawing. Step 3: To find how many are left, subtract the crayons used from the total: 7 - 2 Step 4: 7 - 2 = 5 Emma has 5 crayons left in her box.

3. Emma had 9 colorful crayons in her box. She used 4 crayons to draw a picture of a rainbow. How many crayons does Emma have left in her box? Answer: 5 Solution: Emma started with 9 crayons She used 4 crayons for her drawing To find how many are left, subtract the crayons used from the total: 9 - 4 9 - 4 = 5 The answer is 5 crayons.
   Full step-by-step solution

   Step 1: Emma started with 9 crayons Step 2: She used 4 crayons for her drawing Step 3: To find how many are left, subtract the crayons used from the total: 9 - 4 Step 4: 9 - 4 = 5 The answer is 5 crayons.

4. Sarah has 4 stickers. Sarah gives 3 stickers to a friend. How many stickers does Sarah have left? Answer: 1 Solution: Start with 4 stickers. Subtract the 3 stickers given away: 4 - 3 = 1.
   Full step-by-step solution

   Step 1: Start with 4 stickers. Step 2: Subtract the 3 stickers given away: 4 - 3 = 1. The answer is 1 stickers.

5. There are 7 butterflies sitting on flowers in a garden. 4 butterflies fly away. How many butterflies are left on the flowers? Answer: 3 Solution: Start with 7 butterflies on the flowers. 4 butterflies fly away, so we subtract 4 from 7. 7 - 4 = 3 There are 3 butterflies left on the flowers.
   Full step-by-step solution

   Step 1: Start with 7 butterflies on the flowers. Step 2: 4 butterflies fly away, so we subtract 4 from 7. Step 3: 7 - 4 = 3 There are 3 butterflies left on the flowers.

6. 6 - 0 = ? Answer: 6 Solution: 6 - 0 = 6. Since 6 + 0 = 6.
7. 9 - 0 = ? Answer: 9 Solution: 9 - 0 = 9. Since 9 + 0 = 9.
8. There are 7 circles drawn in a row. 4 of them are colored blue and the rest are red. How many red circles are there? Answer: 3 Solution: There are 7 circles in total. 4 circles are colored blue. To find the red circles, subtract the blue circles from the total: 7 - 4 7 - 4 = 3 The answer is 3.
   Full step-by-step solution

   Step 1: There are 7 circles in total. Step 2: 4 circles are colored blue. Step 3: To find the red circles, subtract the blue circles from the total: 7 - 4 Step 4: 7 - 4 = 3 The answer is 3.

9. 2 - 0 = ? Answer: 2 Solution: 2 - 0 = 2. Since 2 + 0 = 2.
10. Max has 9 cookies. Max eats 1 cookies. How many cookies are left? Answer: 8 Solution: Max begins with 9 cookies. Remove the 1 cookies that were eaten: 9 - 1 = 8.
    Full step-by-step solution

    Step 1: Max begins with 9 cookies. Step 2: Remove the 1 cookies that were eaten: 9 - 1 = 8. The answer is 8 cookies.