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K-2 Mathematics Resources for Parents/Guardians

Videos for "Ten More and Ten Less"

Students will need to be able to find ten more or ten less than any given two digit number. It is important that your student is able to do this without counting up or down by ten individual ones. Students must also be able to explain their reasoning. For example, students should be able to say that 45 is ten more than 35 without counting, and 25 is ten less than 35 without counting.

Standard code and description: 1.NR.5.2; Given a two digit number, mentally find ten more or ten less than the number, without having to count; explain the reasoning used.

Ten More and Ten Less Tasks

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What number is shown by the purple snap cubes?

  • How would you show adding ten to the number shown by the purple snap cubes?

  • What is ten more than the number shown by the purple snap cubes?

  • How would you show taking ten away from the number shown by the purple snap cubes?

  • What is ten less than the number shown by the purple snap cubes?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What is the number?

  • What is ten more than that number?

  • What is ten less than that number?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What is the number?

  • How many tens can you make?

  • How many ones do you have left?

  • What do you notice about the ten frames?

  • How many cubes do you have altogether?

  • What is ten more than that number?

  • What is ten less than that number?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What is the number that is being shown?

  • What is 10 more?

  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What is the number?

  • What is ten less than the number being modeled?

  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What is the number that's being displayed?

  • What is ten more than this number?

  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What is the number shown?

  • What is 10 less?

  • How many tens are there?

  • How many ones?

  • How do you know what 10 less is?

  • How can you display 10 less?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What is ten more?

  • How do you know?

  • What number is being shown?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What are the snap cubes modeling?

  • What number is 10 more than what is being modeled?

  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What is the number shown?

  • What is ten more than the number shown?

  • How do you know?

  • What is ten less than the number being shown?

  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What number does this represent?

  • What is ten more than that number?

  • What is ten less than that number?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • How many tens are there?

  • How many ones are there?

  • What number do you get?

  • What is ten more than that number?

  • What is ten less than the first number?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Write the number that is being shown.

  • What number would be 10 more than the number shown?

  • How do you know?

  • What number would be 10 less than the number shown?

  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What is the number?

  • What is 10 more than the number being modeled?

  • Explain how you found that.

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What is the number being represented?

  • What is ten less than this number?

  • How do you know?

  • What is ten more than this number?

  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What number is shown?

  • What is 10 more?

  • How do you know?

  • What is another way the number can be shown?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What number is being shown?

  • What is 10 more?

  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • What number is shown?

  • What is 10 more than this number?

  • How do you know?

  • What is 10 less than this number? 

  • How do you know?

Note to parents:

  • Students may either count by ones or jump by tens. Jumping by tens is the eventual goal for students but they may need to count by ones until they realize jumping by tens is an option.
  • As you work through these tasks with your student, try to encourage them to jump by ten and realize that jumping up or down a row (10) is the same as counting forward or backward by ten.

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Represent 21 on the hundred chart.
  • What is ten more than 21?
  • Explain your thinking.
  • What is ten less than 21?
  • Explain your thinking.

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Find the number 54.
  • Show me 10 more than 54.
  • How do you know?
  • Show me 10 less than 54.
  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Show me the number 83.
  • What is ten less than 83?
  • Can you show me another way to get that answer?
  • What is ten more than 83?
  • Can you show me another way to get that answer?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Find 63.
  • What is 10 more than 63?
  • How do you know?
  • What is 10 less than 63?
  • How do you know?
  • What is another way to find 10 more than 63?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Show the number 57.
  • What is ten less?
  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Show the number 53.
  • What is ten more than 53?
  • How do you know?
  • What is ten less than 53?
  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Find 73 on the chart.
  • What is 10 more than 73?
  • What is 10 less than 73?
  • How do you know?
  • Do you notice any pattern when working with the chart?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Find 82 on the hundreds chart.
  • What is 10 more than this number?
  • How do you know?
  • What is 10 less than this number?
  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Show me 75.
  • What is 10 more than 75?
  • How do you know?
  • What is 10 less than 75?
  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Start at 19.
  • What is ten more than 19?
  • How do you know?
  • What is ten less than 19?
  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Show me 34.
  • What is ten more than 34?
  • What is ten less than 34?

Note to parents:

  • If your child is counting / hopping by ones, ask:
  • "Is there another way you can show that?"

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Show me 12.
  • How many tens and how many ones make 12?
  • What is ten more than 12?
  • How do you know?
  • What is ten less than 12?
  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Show 36.
  • What is ten more?
  • How do you know?
  • What do you notice about the starting and ending number?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Show the number 67.
  • What is ten more than 67?
  • How do you know?
  • What is ten less than 67?
  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Show me 82.
  • What is 10 less?
  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows:

  • Show me 50.
  • What is 10 more?
  • How do you know?
  • What is 10 less?
  • How do you know?

The above link is a task involving base ten blocks. 

Some questions to ask your child are as follows: