Maths Year 6 – 1b Number & Value – Negative Numbers
Problem Solving
Often we have to solve problems which will involve positive and negative numbers. When this is required we need to remember a few key facts about these numbers:
- Negative numbers extend the numberline to below zero
- When we increase from a negative number we move up the numberline
- When we decrease from a negative number we move down the numberline
Can you think of some real life situations which use negative numbers?
- Temperature
- Depths below sea level
- Bank accounts
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What can we do now?
Now that you can solve problems involving negative numbers you can answer these questions:
1) In the morning of December 3rd the temperature in Birmingham was -3ºc. In the afternoon it was 5ºc. What was the difference in temperatures?
2) Bobby’s bank balance showed as -£34 when he checked it. He deposits £50 into his account. What will his balance be now?
3) A waterproof watch says it can do to depths of -3 metres. If Eric is diving at -10 metres, how far below the recommended level for the watch is he?
HYPERLINKS
Follow the links below to learn more.
Click here for Year 6 Maths Home Page
Click here for KS2 Curriculum Dashboard (All Subjects)
National Curriculum
Pupils should learn to:-
- count in multiples of 6, 7, 9, 25 and 1000
- find 1000 more or less than a given number
- count backwards through zero to include negative numbers
- recognise the place value of each digit in a four-digit number (thousands, hundreds, tens, and ones)
- order and compare numbers beyond 1000
- identify, represent and estimate numbers using different representations
- round any number to the nearest 10, 100 or 1000
- solve number and practical problems that involve all of the above and with increasingly large positive numbers
- read Roman numerals to 100 (I to C) and know that over time, the numeral system changed to include the concept of zero and place value.