Grade 4: Operations with numbers
Baseline tests:
Below all our online tests are listed. Click on the one that you have been enrolled for. You can also go back at any time to redo previous tests that you were enrolled for (we strongly
recommend that!)
Videos:
Below we list the
videos from our Back to Basics database. When you are enrolled with us you can click on any of the questions to see the video memorandum
Click on the "Play" button
Jimmy's 1% Law:
Spend 1% of your day (that is about 15 minutes) to work through these videos and Baseline tests, and your Maths will surely improve!
ID: 153/4-Operations with numbers
Titel: Most people are familiar with vertical multiplication, but in Grade 4 and 5 learners must multiply larger numbers using the distributive law and the breaking down of numbers
Keywords:
Expanded method | breaking up
ID: 157/4-Operations with numbers
Titel: We look at multiplication using factor pairs, and what is required from the numbers to really make this work, and also the distributive property (breaking down) and how to treat the numbers
Keywords:
Expanded method | Multiplying using factor pairs or breaking down
ID: 464/4-Operations with numbers
Titel: Understand how to use the various operations when reading word problems
Keywords:
Word sums
ID: 652/4-Operations with numbers
Titel: When you need to add a number that has 0 in the Units or Tens column, there is a fast and easy way to determine the answer
Keywords:
Adding in multiples of 10
ID: 675/4-Operations with numbers
Titel: Comparing vertical addition to breaking down methods
Keywords:
Horizontal techniques
ID: 677/4-Operations with numbers
Titel: Comparing vertical subtraction to breaking down methods
Keywords:
Horizontal techniques
ID: 679/4-Operations with numbers
Titel: What are some novel techniques with which to double a number, or halve a number?
Keywords:
Doubling and halving
ID: 681/4-Operations with numbers
Titel: We look specifically at a technique to multiply a single digit number with 10 or 100
Keywords:
Multiply with multiples of 10
ID: 685/4-Operations with numbers
Titel: We investigate the technique of multiplying using factor pairs and the distributive property, to see which one works best under which circumstances
Keywords:
Multiplication with Factor pairs, or the Distributive Technique | multiply by breaking down numbers | associative law
ID: 687/4-Operations with numbers
Titel: What exactly is the clue board technique?
Keywords:
Clue Board method | division
ID: 732/4-Operations with numbers
Titel: What does it mean to add or multiply by grouping numbers together?
Keywords:
Use the associative principle when adding numbers
ID: 736/4-Operations with numbers
Titel: How does it work if you need to add or subtract, with either both numbers or only one of the numbers being broken down
Keywords:
Add and subtract by breaking down numbers | compensating | building up and breaking down numbers
ID: 738/4-Operations with numbers
Titel: In this question we subtract two numbers, and then test by adding
Keywords:
Subtract and test with addition | Inverse operations
ID: 740/4-Operations with numbers
Titel: What do you need to know about adding and subtracting numbers on a number line?
Keywords:
Add and subtract on a number line
ID: 1089/4-Operations with numbers
Titel: How to use factor pairs to answer a question about multiplication of numbers?
Keywords:
Multiplying with factor pairs
ID: 734/4-Operations with numbers
Titel: When you add or subtract by rounding up or rounding down, there are certain things that you need to remember to do
Keywords:
Rounding
ID: 683/4
Operations with numbers
Titel: Estimating an answer of an addition, or subtraction, operation
Keywords:
Rounding
