Grade 4 Mathematics

What your child will learn and do in Grade 4 Mathematics

In Grade Four, students use addition, subtraction, multiplication, and division to solve word problems, including problems involving measurement of volume, mass, and time. Students continue to build their understanding of fractions and begin to understand the relationship between fractions and decimals. Activities in these areas include:

  • Adding and subtracting whole numbers up to 1 million quickly and accurately

  • Solving multi-step word problems, including converting measurements from larger to smaller units

  • Finding factors and multiples for numbers up to 100

  • Multiplying and dividing multi-digit numbers using models

  • Multiplying a multi-digit number times a single-digit number (234 x 7)

  • Multiplying a two-digit number by a two-digit number (34 x 23)

  • Dividing a multi-digit number by a single-digit number when there is no remainder (342 ÷ 3)

  • Comparing the size of two fractions with different numerators and different denominators 

  • Creating equal fractions (3⁄4 = 6⁄8)

  • Adding and subtracting fractions with the same denominator

  • Converting fractions with denominators of 10 or 100 into decimals

  • Locating decimal numbers on a number line

  • Comparing decimals 

  • Connecting addition of whole numbers to multiplying fractions by whole numbers (3 x ¼ is the same as ¼ + ¼ + ¼)

  • Understanding, drawing and measuring angles

  • Describing and sorting shapes by their lines and angles

  • Recognizing lines of symmetry

  • Representing and interpreting data in a line plot

Helping your child learn outside of school:    

  • Use everyday objects to allow your child to explore the concept of fractions. For example, use measuring cups to see how many times you have to refill a 1⁄4 cup to equal a 1⁄2 cup or how many 1⁄3’s are in two cups. 

  • Have your child write or describe fractions in different ways. For example, what are some different ways to make 3⁄4?  (Answers could include: 1⁄4+1⁄4+1⁄4 or 3 x1⁄4).

  • Play math games with your child. For example, using a deck of cards, give each person 4 cards. See how many cards you can use to make 24 using addition, subtraction, multiplication and/or division. Give a point for each card used.  For example, you might have a 4, 5, 6, and 9. You can use the 4 and 6 for two points (4 x 6 = 24) or all cards for four points (4 + 5 + 6 + 9 = 24).

Helping Your Child with Homework by asking questions or making suggestions 

  • Can you do some easier problems and go back to this one after?

  • What part of the problem is giving you trouble?

  • Let's read the problem together and make sure we understand what it is asking.

  • Can we draw a picture of the problem? 

  • Can we make up an easier problem that is similar to this? Then we can work our way up to this one.

  • Let’s take a 10 minute break and come back to this one.

  • What did your teacher say about this assignment?


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