My Decimal Number
In this activity students brainstorm different ways to represent decimal fractions. They will draw on their knowledge of decimal place value, addition and subtraction of decimals, and writing decimals in words and symbols.
represent decimal numbers in a variety of ways
- Write a decimal number on the board (to two decimal places).
- Brainstorm different ways to represent it.
For example 3.81 could be expressed as;
- Three point eight one
- 3 + 0.8 + 0.01
- (3 x 1) + (8 x 0.1) + (1 x 0.01)
- 381 / 100
- 4 – 0.19
- Three and eighty one hundredths
- 7.62 / 2
- Give each student a decimal number and ask them to represent in as many ways as they can. Depending on the level of individual students they could be to one, two, or three decimal places. Less confident students could work in pairs.
- Students could present their work on a sheet of A3 paper to be displayed on the wall.
- As the students work encourage them to use a variety of approaches (not just a whole list of addition sums).
Similar Resources
Nudge
Say the forwards and backwards number word sequences by ones, tens, and hundreds in the range 0 – 1000.
Say the forwards and backwards whole number word sequences by ones, tens, hundreds, and thousands in the range 0–1 000 000, including finding numbers that are 10, 100, and 1 000 more or less than a given number.
Say the number one–thousandth, one–hundredth, one–tenth, one, and ten, etc, before and after any given number.
Using Calculators
Say the forwards and backwards number word sequences in the range 0–100.
Say the forwards and backwards skip–counting sequences in the range 0–100 for twos, fives, and tens.
Say the forwards and backwards number word sequences by ones, tens, and hundreds in the range 0 – 1000.
Say the forwards and backwards whole number word sequences by ones, tens, hundreds, and thousands in the range 0–1 000 000, including finding numbers that are 10, 100, and 1 000 more or less than a given number.
Find out how many ones, tens, hundreds and thousands are in all of a whole number.
Say the number one–thousandth, one–hundredth, one–tenth, one, and ten, etc, before and after any given number.
Order fractions, decimals and percentages.
Reading Decimal Fractions
Read decimals with tenths, count forwards and backwards in tenths, order decimals with tenths.
Comparing Chalk and Cheese
convert unlike units in order to add and subtract them
The Power of 10
This is a level 5 number activity from the Figure It Out series. It relates to Stage 8 of the Number Framework.
