Page 4 - Syok Praktis PBD (2023) Mathematics TH5
P. 4
Mathematics Year 5 Practice 1 Whole Numbers and Operations
9. Before rounding off any number: 12. Subtraction is the process of finding the
(a) determine the digit in the place value to difference.
be rounded off.
(b) circle the digit at its right-hand side. Arrange the
Example: numbers in
Round off 563 277 to the nearest hundred standard Subtract Regroup if
thousand. written form from right necessary.
according to to left.
6 is larger than 5. their place
Add 1 to 5
value.
563 277 → 600 000
13. Multiplication is a process of repeated addition.
The digit at the
place value Change to 0 Arrange the
that will be all the digits
rounded off on the right numbers in
standard Multiply Regroup if
Round off 324 987 to the nearest ten thousand. written form from right necessary.
according to to left.
4 is smaller than 5 their place
Therefore digit 2 remains.
value.
324 987 → 320 000
14. Multiplication of any number with 100 and
The digit at the 1 000.
place value Change to 0 678 × 100 = 67 800
that is going to all the digits
be rounded. on the right. 564 × 1 000 = 564 000
15. Division is the process of gathering or sharing
10. The numbers arranged in a particular equally.
sequence are known as number patterns. 16. Division is the inverse of the multiplication
These number patterns can be determined process.
by adding, subtracting, multiplying or
dividing the numbers with the certain number 17. Division of any number 100 or 1 000.
consecutively. 45 300 ÷ 100 = 453
Example: 875 000 ÷ 1 000 = 875
18. Mixed operation is a process that involves
+ 200 + 200 + 200 + 200
more than one operation.
14 000 14 200 14 400 14 600 14 800 Mixed Solution
operation
11. Addition is the process of finding the total of
two or more numbers. + and × × first, then +
– and × × first, then –
Arrange the + and ÷ ÷ first, then +
numbers in
standard Add from – and ÷ ÷ first, then –
written form right to Regroup if
according to left. necessary. 19. For a mixed operation involving brackets ( ),
their place solve the operations in the brackets first.
values.
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