Decompose Numbers to 10

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Decompose Numbers to 10 · Kindergarten · Worksheet 1

1. Kaia has 10 cookies. 6 of them have chocolate chips and the rest are plain. How many cookies are plain? Answer: 4 Solution: Kaia has 10 cookies in total. 6 have chocolate chips, so we subtract to find the plain ones: 10 - 6 = 4.
   Full step-by-step solution

   Step 1: Kaia has 10 cookies in total. Step 2: 6 have chocolate chips, so we subtract to find the plain ones: 10 - 6 = 4. The answer is 4.

2. 5 = ? + 5 Answer: 0 Solution: Since 0 + 5 = 5, we know that 5 = 0 + 5.
3. Emma sees 10 circles drawn on the board. Some are red circles, and 5 are blue circles. How many circles are red? Answer: 5 Solution: There are 10 circles in total. 5 of them are blue circles. To find how many are red, count how many more are needed to make 10: 5 + ?
   Full step-by-step solution

   Step 1: There are 10 circles in total. Step 2: 5 of them are blue circles. Step 3: To find how many are red, count how many more are needed to make 10: 5 + ? = 10. Step 4: 5 + 5 = 10, so there are 5 red circles. The answer is 5.

4. 7 = ? + 4 Answer: 3 Solution: Since 3 + 4 = 7, we know that 7 = 3 + 4.
5. Look at the pattern of stars: ★ ★ ★ ★ | ★ ★ ★. How many stars are there in total? Answer: 7 Solution: Count the stars in the first group: ★ ★ ★ ★ = 4 stars Count the stars in the second group: ★ ★ ★ = 3 stars Add the stars from both groups: 4 + 3 = 7 There are 7 stars in total.
   Full step-by-step solution

   Step 1: Count the stars in the first group: ★ ★ ★ ★ = 4 stars Step 2: Count the stars in the second group: ★ ★ ★ = 3 stars Step 3: Add the stars from both groups: 4 + 3 = 7 There are 7 stars in total.

6. Look at the triangles: ▲ ▲ ▲ ▲ ▲ | ▲ ▲. How many triangles are there in total? Answer: 7 Solution: Count the triangles in the first group: ▲ ▲ ▲ ▲ ▲ = 5 triangles. Step 2: Count the triangles in the second group: ▲ ▲ = 2 triangles. Step 3: Add them together: 5 + 2 = 7.
   Full step-by-step solution

   Step 1: Count the triangles in the first group: ▲ ▲ ▲ ▲ ▲ = 5 triangles. Step 2: Count the triangles in the second group: ▲ ▲ = 2 triangles. Step 3: Add them together: 5 + 2 = 7. There are 7 triangles in total.

7. 8 can be made from 5 and what other number? Answer: 3 Solution: We know that 8 can be made from 5 and another number Think about what number plus 5 equals 8 5 + 3 = 8 So the other number that makes 8 with 5 is 3 The answer is 3.
   Full step-by-step solution

   Step 1: We know that 8 can be made from 5 and another number Step 2: Think about what number plus 5 equals 8 Step 3: 5 + 3 = 8 Step 4: So the other number that makes 8 with 5 is 3 The answer is 3.

8. 8 = ? + 6 Answer: 2 Solution: Since 2 + 6 = 8, we know that 8 = 2 + 6.
9. Noah has 8 cookies. 0 of them have chocolate chips and the rest are plain. How many cookies are plain? Answer: 8 Solution: Noah has 8 cookies in total. 0 have chocolate chips, so we subtract to find the plain ones: 8 - 0 = 8.
   Full step-by-step solution

   Step 1: Noah has 8 cookies in total. Step 2: 0 have chocolate chips, so we subtract to find the plain ones: 8 - 0 = 8. The answer is 8.

10. Liam has 7 crayons. 6 are red and the rest are blue. How many blue crayons does Liam have? Answer: 1 Solution: Liam has 7 crayons total. 6 are red, so we find the blue ones by subtracting: 7 - 6 = 1.
    Full step-by-step solution

    Step 1: Liam has 7 crayons total. Step 2: 6 are red, so we find the blue ones by subtracting: 7 - 6 = 1. The answer is 1.