Common Core Kindergarten Math Quiz: Count To 100 By Ones And Tens
8 questions · exam conditions
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Count To 100 By Ones And TensQuestion 1 of 8

Lisa counts: 85,86,87,88,89,9085, 86, 87, 88, 89, 90. Now she wants to continue counting but switch to counting by tens. If she continues from 9090 and counts by tens until she reaches 100100, how many more numbers will she say?

She will say 11 more number
She will say 22 more numbers
She will say 1010 more numbers
She will say 33 more numbers
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Common Core Kindergarten Math Quiz

Common Core Kindergarten Math Quiz: Count To 100 By Ones And Tens

Practice Count To 100 By Ones And Tens in Common Core Kindergarten Math with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Count To 100 By Ones And Tens, giving you a quick way to practice the rules, question types, and explanations that matter most for Common Core Kindergarten Math.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

Lisa counts: 85,86,87,88,89,9085, 86, 87, 88, 89, 90. Now she wants to continue counting but switch to counting by tens. If she continues from 9090 and counts by tens until she reaches 100100, how many more numbers will she say?

  1. She will say 11 more number (correct answer)
  2. She will say 22 more numbers
  3. She will say 1010 more numbers
  4. She will say 33 more numbers
Explanation: Starting from 90 and counting by tens to reach 100, Lisa will say: 100. That's only 1 more number. Choice B might come from thinking 90→100 is 2 jumps. Choice C confuses the size of the jump (10) with the count of numbers. Choice D represents some other miscounting error.

Question 2

Maya is counting by tens starting from 1010. She says: "1010, 2020, 3030..." If she continues this pattern and says exactly 77 more numbers after 3030, what will be the last number she says?

  1. 7070
  2. 100100 (correct answer)
  3. 9090
  4. 3737
Explanation: After saying 30, Maya will say 7 more numbers counting by tens: 40, 50, 60, 70, 80, 90, 100. The last number is 100. Choice A (70) represents counting only 4 more numbers. Choice C (90) represents counting only 6 more numbers. Choice D (37) shows confusion between counting by tens versus counting by ones.

Question 3

Look at the hundred chart shown. If you start at 7373 and count by ones in the direction of increasing numbers, which number will you land on after counting 66 more numbers?

  1. You will land on 7979 (correct answer)
  2. You will land on 7878
  3. You will land on 8080
  4. You will land on 7676
Explanation: Starting at 73 and counting 6 more numbers by ones: 74, 75, 76, 77, 78, 79. You land on 79. Choice B represents counting only 5 more numbers. Choice C represents counting 7 more numbers. Choice D represents counting only 3 more numbers.

Question 4

Use the number line to answer the question. Jake starts at 00 and makes 33 jumps of 1010, then makes 44 jumps of 11. Where does Jake land?

  1. Jake lands at 3434 (correct answer)
  2. Jake lands at 4343
  3. Jake lands at 3737
  4. Jake lands at 3030
Explanation: Starting at 0, Jake makes 3 jumps of 10: 0‚Üí10‚Üí20‚Üí30. Then 4 jumps of 1: 30‚Üí31‚Üí32‚Üí33‚Üí34. He lands at 34. Choice B reverses the digits (43 instead of 34). Choice C represents adding 3+4=7 to 30. Choice D represents stopping after only the jumps of 10.

Question 5

Count by tens: 30,40,50,30, 40, 50,  . What number comes next?

  1. 6060 (correct answer)
  2. 5151
  3. 5555
  4. 7070
Explanation: When you count by tens, each number is 1010 more: 30,40,50,6030, 40, 50, 60. So 6060 comes next.

Question 6

Refer to the counting sequence below. Amy counts by tens starting from 1010: 10,20,30,40,50,60,70,80,90,10010, 20, 30, 40, 50, 60, 70, 80, 90, 100. Then she counts backward by ones from 100100. What are the first 44 numbers she says when counting backward?

  1. 95,94,93,9295, 94, 93, 92 are her first four backward numbers
  2. 90,80,70,6090, 80, 70, 60 are her first four backward numbers
  3. 100,99,98,97100, 99, 98, 97 are her first four backward numbers
  4. 99,98,97,9699, 98, 97, 96 are her first four backward numbers (correct answer)
Explanation: When you see a question about counting sequences, pay attention to the direction (forward or backward) and the counting pattern (by ones, twos, tens, etc.). This question has two parts: first Amy counts by tens, then she switches to counting backward by ones. Let's follow Amy's counting carefully. She starts counting by tens: 10,20,30,40,50,60,70,80,90,10010, 20, 30, 40, 50, 60, 70, 80, 90, 100. When she reaches 100100, she switches to counting backward by ones. The key question is: what does "counting backward by ones from 100100" mean? When you count backward by ones from 100100, you start at 100100 and subtract 11 each time: 100,99,98,97,96,95...100, 99, 98, 97, 96, 95... The question asks for the "first 44 numbers she says when counting backward." Since she already said 100100 at the end of her counting by tens, the first four new numbers when counting backward are 99,98,97,9699, 98, 97, 96. This makes D correct. Let's check the wrong answers. Choice A (95,94,93,9295, 94, 93, 92) skips several numbers - these would be her 5th through 8th backward numbers. Choice B (90,80,70,6090, 80, 70, 60) incorrectly continues counting backward by tens instead of switching to counting by ones. Choice C (100,99,98,97100, 99, 98, 97) includes 100100, but since Amy already said 100100 to end her first sequence, it shouldn't count as one of her backward numbers. Remember: when the counting pattern changes in a problem, pay close attention to where one sequence ends and the new one begins.

Question 7

Ben says 00. He counts by tens: 10,20,30,4010, 20, 30, 40. Then he keeps counting by ones: 41,42,43,44,4541, 42, 43, 44, 45. How many numbers did Ben say in all?

  1. Ben said 1111 numbers total during the game
  2. Ben said 1010 numbers total during the game (correct answer)
  3. Ben said 88 numbers total during the game
  4. Ben said 99 numbers total during the game
Explanation: Ben counts by tens: 0,10,20,30,400, 10, 20, 30, 40. That is 55 numbers. Then he counts by ones: 41,42,43,44,4541, 42, 43, 44, 45. That is 55 more numbers. 5+5=105 + 5 = 10, so Ben said 1010 numbers.

Question 8

Sarah counts by tens from 2020 to 8080. Then she counts by ones from 8080 to 8585. How many numbers did Sarah say in total?

  1. 1212 numbers total
  2. 1313 numbers total
  3. 1111 numbers total (correct answer)
  4. 1010 numbers total
Explanation: Counting by tens from 20 to 80: 20, 30, 40, 50, 60, 70, 80 (7 numbers). Then counting by ones from 80 to 85: 81, 82, 83, 84, 85 (4 more numbers, not repeating 80). Total: 7 + 4 = 11 numbers. Choice A incorrectly counts 80 twice. Choice B adds an extra number due to miscounting. Choice D only counts the tens sequence.