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Decimals
Objectives
To demonstrate an ability to order decimals and to understand a number’s size by the position of digits after the decimal point.
Resources
Abacus 4 Textbook 3 | Copier | Coconut Decimals - Up to 10 (1 or 2 dp) (TopMarks)
Today's Lesson
Main Activity
At the beginning of the lesson, call out some larger 2 digit numbers to be divided by a single digit number. There can be remainders.
For example:
23 ÷ 5 =
49 ÷ 7 =
Turn to page 41 in Abacus 4 Textbook 3.
Play Coconut Decimals - Up to 10 (1 or 2 dp) (TopMarks)
If your student is unsure, encourage them to draw the place value chart to compare numbers by comparing the digits furthest to the left first. E.g.
| Ones | . | Tenths | Hundredths |
| 4 | . | 6 | 1 |
| 4 | . | 3 | 7 |
Firstly, look at the ones column - both digits are the same so look at the tenths column.
6 is bigger than 3 so 4.61 must be bigger than 4.37
Look at the various measurements and ask your student to order them from shortest to longest, either in the textbook, or on a copy of the page.
Look at the THINK section below and discuss this with your student.
Ask them to explain the two measurements. If necessary, turn to page 38 and encourage your student to use the number lines to help demonstrate by way of explanation.
This video will talk you through the ‘Think’ question at the bottom of page 41.