1. We normally abbreviate this to ‘nearest 10’
We normally abbreviate this to ‘nearest 10’. How do we know whether to round up or down?

2. We normally abbreviate this to ‘nearest 100’
We normally abbreviate this to ‘nearest 100’. What would nearest 20 mean? Nearest 1000?

3. How do we know whether to round up or down?

4. Decimal places means the number of digits after the decimal point
Decimal places means the number of digits after the decimal point. So in our answer, we can only have 2 decimal places. The first number is already rounded to decimal places – so it requires no action. If there are more than 2 decimal places, use the third decimal place to round up or down.

5. d. p. is short for decimal place
d.p. is short for decimal place. If the number has 9’s in the decimal places, the next number with 1 decimal place is 27.0

6. Round to the nearest integer
Round to 1 decimal place
Round to 2 d.p
305 55
26.8
1009
26.5
2.08
35.9
2005
85.56
23.08
2.15
88.99
2.0458
0.0509
1.198
3.555

7. Round to the nearest integer
Round to 1 decimal place
Round to 2 d.p
305
(310) 55
(60)
26.8
(30)
1009
(1010)
26.5
(27)
2.08
(2)
35.9
(36)
2005
(2005)
85.56
(85.6)
23.08
(23.1)
2.15
(2.2)
88.99
(89.0)
2.0458
(2.05)
0.0509
(0.05)
1.198
(1.20)
3.555
(3.56)