New
New
Year 7
Ordering decimals
I can compare decimals using < and >.
New
New
Year 7
Ordering decimals
I can compare decimals using < and >.
Lesson details
Key learning points
- Decimals can be compared using place value tables.
- Decimals can be compared on a number line.
- Decimals comparisons can be expressed using < and >.
Common misconception
Considering the decimal part of a number to be an integer.
Reinforce the use of a place value table and working from left to right when comparing decimals. It can be useful to use money here.
Keywords
Place value - The value of a digit in a number based on where it is placed is known as place value.
Decimal form - A number is in decimal form when the decimal point is shown and there are digits to the right of the decimal point.
Pick digits at random, write these on the board, a pupil writes down a decimal using all digits. The others must ask 'higher or lower' questions to determine the number chosen, they can only answer yes and no to the questions.
Teacher tip
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
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6 Questions
Q1.
$$73$$ and $$(-73)$$ have the same value.
Correct Answer: absolute
absolute
Q2.
Which of the following are below $$(-10)\unicode{x2103}$$
$$(-8)\unicode{x2103}$$
$$(-2)\unicode{x2103}$$
Correct answer: $$(-12)\unicode{x2103}$$
$$(-12)\unicode{x2103}$$
Correct answer: $$(-14)\unicode{x2103}$$
$$(-14)\unicode{x2103}$$
Q3.
Complete this sentence: $$(-11)\unicode{x2103}$$ is than $$(-9)\unicode{x2103}$$
Correct Answer: colder, lower, less than
colder, lower, less than
Q4.
Arrange these temperatures from coldest to warmest:
1 - $$(-76)\unicode{x2103}$$
1
- $$(-76)\unicode{x2103}$$
2 - $$(-73.5)\unicode{x2103}$$
2
- $$(-73.5)\unicode{x2103}$$
3 - $$(-73)\unicode{x2103}$$
3
- $$(-73)\unicode{x2103}$$
4 - $$(-37.1)\unicode{x2103}$$
4
- $$(-37.1)\unicode{x2103}$$
5 - $$(-37.05)\unicode{x2103}$$
5
- $$(-37.05)\unicode{x2103}$$
6 - $$(-37)\unicode{x2103}$$
6
- $$(-37)\unicode{x2103}$$
Q5.
Which of the following pairs of integers need the '<' symbol in the box to make them true?
$$(-22)$$ $$\square$$ $$(-25)$$
Correct answer: $$(-3233)$$ $$\square$$ $$(-3232)$$
$$(-3233)$$ $$\square$$ $$(-3232)$$
$$(-401)$$ $$\square$$ $$(-410)$$
Correct answer: $$(-12 587)$$ $$\square$$ $$(-12 578)$$
$$(-12 587)$$ $$\square$$ $$(-12 578)$$
Q6.
Arrange these integers from smallest to largest:
1 - $$(-8769)$$
1
- $$(-8769)$$
2 - $$(-7698)$$
2
- $$(-7698)$$
3 - $$(-7689)$$
3
- $$(-7689)$$
4 - $$(-6987)$$
4
- $$(-6987)$$
5 - $$(-6879)$$
5
- $$(-6879)$$
6 - $$(-6789)$$
6
- $$(-6789)$$
Exit quiz
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6 Questions
Q1.
The value of a digit in a number based on where it is placed is known as place .
Correct Answer: value
value
Q2.
Select all the values that are less than 0.3683
Correct answer: 0.3634
0.3634
Correct answer: 0.357
0.357
0.3759
0.3683
Correct answer: 0.35135
0.35135
Q3.
What number is $$a$$ pointing to?
Correct Answer: 9.7
9.7
Q4.
What number is $$b$$ pointing to?
Correct Answer: 10.25
10.25
Q5.
What number is $$c$$ pointing to?
Correct Answer: 9.2
9.2
Q6.
What number is $$d$$ pointing to?
Correct Answer: 12.6
12.6