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2.04 Subtraction without regrouping

Lesson

Are you ready?

Do you feel that you have mastered addition problems, using some different methods?

Find the value of $270+520$270+520.

Learn

Just like addition, we can use place value blocks (also called base $10$10 models) to solve addition. See how we do this in this video.

 

 

Learn

We can also use place value columns to solve subtraction problems working down our page. In this video we look at subtracting a number in the thousands from another number in the thousands.

Apply

Question 2

Use the number line to find the answer to $667-637$667637.

  1. First place $667$667 on the number line.

    660661662663664665666667668669670
  2. Place $637$637 on the number line.

    630631632633634635636637638639640
  3. Use the number line to work out the difference between $667$667 and $637$637.

    600610620630640650660670

Remember!

When we are subtracting down the page, it's really important to start from the right (units place) and work to the left, no matter how many digits our numbers have.

 

Outcomes

VCMNA153

Apply place value to partition, rearrange and regroup numbers to at least tens of thousands to assist calculations and solve problems

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