Worksheet 1Worksheet 2Worksheet 3

The download includes this worksheet followed by the answer key with explanations. In the print dialog choose “Save as PDF” to download.

lessonbunny.com
Name: ______________________________ Date: ______________

Number Sequence to 20

Kindergarten · Mathematics · Worksheet 3

  1. Max is hopping along a path of numbered stones. The stones Max hops on say: 16, 17, ___. What number is on the missing stone? Answer: ______________
  2. Aroha is hopping along a path of numbered stones. The stones Aroha hops on say: 15, 16, ___. What number is on the missing stone? Answer: ______________
  3. What number comes after 15? Answer: ______________
  4. Look at the pattern: 🟦 🟦 🟦 🟦 | 🟦 🟦 🟦 🟦 | 🟦 🟦 🟦 🟦 | 🟦. How many blue squares are there in total? Answer: ______________
  5. Alex is jumping on numbered spots on the playground. Alex jumps from spot 15 to spot 16, then to spot 17. Which number spot should Alex jump to next? Answer: ______________
  6. If you are counting from 1 to 20, what number comes right after 15? Answer: ______________
  7. Emma has 7 stickers on her notebook. Her friend gives her 5 more stickers. How many stickers does Emma have now? Answer: ______________
  8. Mere sees a number line on the wall. The numbers go: 17, 18, ____. What is the missing number? Answer: ______________
  9. What number comes after 1? Answer: ______________
  10. 11, 12, _, 14, 15 Answer: ______________
lessonbunny.com

Answer Key & Explanations

Number Sequence to 20 · Kindergarten · Worksheet 3

  1. Max is hopping along a path of numbered stones. The stones Max hops on say: 16, 17, ___. What number is on the missing stone? Answer: 18 Solution: See the numbers on the stones Max hopped on: 16 and 17. The numbers go in order, increasing by 1 each time: 16 to 17 is +1. The missing stone comes after 17, so it is 17 + 1 = 18.
    Full step-by-step solution

    Step 1: See the numbers on the stones Max hopped on: 16 and 17. Step 2: The numbers go in order, increasing by 1 each time: 16 to 17 is +1. Step 3: The missing stone comes after 17, so it is 17 + 1 = 18. The answer is 18.

  2. Aroha is hopping along a path of numbered stones. The stones Aroha hops on say: 15, 16, ___. What number is on the missing stone? Answer: 17 Solution: See the numbers on the stones Aroha hopped on: 15 and 16. The numbers go in order, increasing by 1 each time: 15 to 16 is +1. The missing stone comes after 16, so it is 16 + 1 = 17.
    Full step-by-step solution

    Step 1: See the numbers on the stones Aroha hopped on: 15 and 16. Step 2: The numbers go in order, increasing by 1 each time: 15 to 16 is +1. Step 3: The missing stone comes after 16, so it is 16 + 1 = 17. The answer is 17.

  3. What number comes after 15? Answer: 16 Solution: Start counting from 15. The next number in the counting sequence is 16.
    Full step-by-step solution

    Step 1: Start counting from 15. Step 2: The next number in the counting sequence is 16. The answer is 16.

  4. Look at the pattern: 🟦 🟦 🟦 🟦 | 🟦 🟦 🟦 🟦 | 🟦 🟦 🟦 🟦 | 🟦. How many blue squares are there in total? Answer: 13 Solution: Count the first group: 🟦 🟦 🟦 🟦 = 4 squares Count the second group: 🟦 🟦 🟦 🟦 = 4 squares Count the third group: 🟦 🟦 🟦 🟦 = 4 squares Count the last group: 🟦 = 1 square Add all groups together: 4 + 4 + 4 + 1 = 13 The answer is 13.
    Full step-by-step solution

    Step 1: Count the first group: 🟦 🟦 🟦 🟦 = 4 squares Step 2: Count the second group: 🟦 🟦 🟦 🟦 = 4 squares Step 3: Count the third group: 🟦 🟦 🟦 🟦 = 4 squares Step 4: Count the last group: 🟦 = 1 square Step 5: Add all groups together: 4 + 4 + 4 + 1 = 13 The answer is 13.

  5. Alex is jumping on numbered spots on the playground. Alex jumps from spot 15 to spot 16, then to spot 17. Which number spot should Alex jump to next? Answer: 18 Solution: Alex jumps in order: 15, 16, 17. Each jump goes to the next number. The next spot after 17 is 17 + 1 = 18.
    Full step-by-step solution

    Step 1: Alex jumps in order: 15, 16, 17. Step 2: Each jump goes to the next number. Step 3: The next spot after 17 is 17 + 1 = 18. The answer is 18.

  6. If you are counting from 1 to 20, what number comes right after 15? Answer: 16 Solution: Start counting from 1. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, ... Notice that after 15, the next number in the counting order is the number that is one more than 15.
    Full step-by-step solution

    Let's count from 1 to 20 step by step. Step 1: Start counting from 1. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, ... Step 2: Notice that after 15, the next number in the counting order is the number that is one more than 15. Step 3: Calculate: 15 + 1 = 16. Step 4: Therefore, the number right after 15 is 16. Final Answer: 16

  7. Emma has 7 stickers on her notebook. Her friend gives her 5 more stickers. How many stickers does Emma have now? Answer: 12 Solution: Emma starts with 7 stickers. Her friend gives her 5 more stickers. Add the stickers together: 7 + 5 7 + 5 = 12 Emma has 12 stickers now.
    Full step-by-step solution

    Step 1: Emma starts with 7 stickers. Step 2: Her friend gives her 5 more stickers. Step 3: Add the stickers together: 7 + 5 Step 4: 7 + 5 = 12 Emma has 12 stickers now.

  8. Mere sees a number line on the wall. The numbers go: 17, 18, ____. What is the missing number? Answer: 19 Solution: Look at the two numbers we know: 17 and 18. The numbers go up by 1 each time. From 17 to 18 is +1.
    Full step-by-step solution

    Step 1: Look at the two numbers we know: 17 and 18. Step 2: The numbers go up by 1 each time. From 17 to 18 is +1. Step 3: So the missing number must be 18 + 1 = 19. The answer is 19.

  9. What number comes after 1? Answer: 2 Solution: When counting up, the number after 1 is 2.
  10. 11, 12, _, 14, 15 Answer: 13 Solution: Look at the sequence: 11, 12, _, 14, 15 From 11 to 12 is +1 From 14 to 15 is +1 The missing number should be 12 + 1 = 13 Check: 11, 12, 13, 14, 15 - this makes a complete counting sequence The answer is 13.
    Full step-by-step solution

    Step 1: Look at the sequence: 11, 12, _, 14, 15 Step 2: Notice the numbers are counting forward Step 3: From 11 to 12 is +1 Step 4: From 14 to 15 is +1 Step 5: The missing number should be 12 + 1 = 13 Step 6: Check: 11, 12, 13, 14, 15 - this makes a complete counting sequence The answer is 13.