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Maths Videos
Maths Help Videos
The Maths help videos are displayed categorized by Primary Grade and then by mathematical Strand. Where videos content exceeds the skills appropriate to a grade, the video will be associated to all relevant grades.
We would like to thank Khan Academy for sharing it's mathematical related videos on 4to12maths.com Note: All Khan Academy content available for free at www.khanacademy.org
| Two digit and single digit addition - larger numbers | Adding a two digit number to a single digit number eg. 99 + 9. This video also introduces the concept of carrying as well as using the number line to explain addition. |
| Multiple digit addition | Quick review of adding two individual numbers eg. 7 + 8. Adding two digit numbers to a single digit eg. 24 + 8. Adding two digit numbers to a two digit number eg. 28 +35. Adding a four digit number to a three digit number eg. 2015 + 143. |
| Introduction to borrowing or regrouping | Subtracting a single digit number from a two digit number eg. 17 - 9. Concepts of Units, Tens and Hundreds. Concept of borrowing and regrouping for subtracting the following digit numbers from one another eg. 22 - 17, 703 - 67, 953 - 754. |
| Explanation of why borrowing / regrouping works when subtracting numbers | Explanation of why borrowing / regrouping works when subtracting numbers. This shows an explanation of subtracting multi-digit numbers using their expanded forms. Examples shown are the subtracting multi-digit number eg. 1,005 - 616, 732 - 23, 512 - 38. |
| Introduction to multiplication | Multiply two individual numbers eg. 2 x 3, 4 x 3. Multiplying numbers by 1 and multiplying numbers by 0 (zero). |
| Introduction to the multiplication tables : 1 to 9 | Multiplication tables from 1 to 9. |
| Introduction to the multiplication tables : 10 to 12 | Multiplication tables from 10 to 12 |
| Introduction to division | An introduction to division. Dividing 1 digit number by another 1 digit number. Dividing a 2 digit number by a single digit number. Introduces us to the concept of the remainder and basic long division. |
| Dividing into larger numbers. Introduction to long division and remainders | Long division approach including remainders. Dividing a 2 digit number by 1 digit number. Dividing a 3 digit number by a single digit number. |
| Place Value 1 : Find the place value of a number | Find the place value of 3 in 4356. Write a number in expanded form, thousands, hundreds, tens and units. |
| Place Value 3 : Write a number in expanded form. | Write 14,897 in expanded form. |
