Page 8 - Genius PBD - Mathematics Year 3

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Learning Area: Numbers and Operations
UNIT 1 Numbers up to 10 000
Mathematics Year 3 Unit 1 Numbers up to 10 000

Genius Note What is the place value for digit 9 in
the number 4 982?

1. Number value.

2 356 (Two thousand three hundred and fifty-six)
Digit 2 3 5 6
Place value thousands hundreds tens ones
Digit value 2 000 300 50 6

2. Partitioning numbers can be done either based on place value or digit value.
Place value: 4 thousands + 8 hundreds + 2 tens + 6 ones
4 826
Digit value: 4 000 + 800 + 20 + 6

3. Estimated quantities.

250 ml More than 400 ml Less than 240 marbles Approximately
250 ml 400 ml 120 marbles
4. A number can be rounded off to a certain place value.

7 635 becomes 8 000 when rounded off to the nearest thousand.
Nearest thousand The hundreds digit is greater than 5, so add 1 to the
thousands value. The 6, 3 and 5 digits become 0.
7 635 → 8 000
7 635 becomes 7 600 when rounded off to the nearest hundred.

Nearest hundred The tens digit is less than 5, so maintain the hundreds
digit and replace 3 and 5 digits with 0.

7 635 → 7 600
5. The numbers are getting greater in ascending number pattern but getting smaller in descending
number pattern.
Increasing by five

7 805 7 810 7 815 7 820 7 825

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Unit 1.indd 1 02/11/2022 8:01 AM