Unit 13 – Fractions and decimals
Representing, comparing and ordering decima;s
79
8 8.4
8 8.4
Do you agree with Jade? Decide how you will represent each number to help show your thinking.
Look at the counters in the place value chart.
• •
1
10 10
0.1 0.1
1
1
1
What value do they represent? There are 2 tens, 5 ones and 2 tenths. We read it as twenty-five point two. We can expand 25.2 as: 25.2 = 20 + 5 + 0.2 1 1 •
2 Compare and order decimals on a number line or on a place value chart.
0
1
2
0.8
1.3 1.5
• •
1.3 and 1.5 have the same number of ones. 1.5 has 2 more tenths
than 1.3. 0.8 is the smallest number because there are no ones. We can write the decimal numbers in order from smallest to greatest as 0.8, 1.3, 1.5 or using symbols as: 0.8 < 1.3 < 1.5. • •
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