2. Copy and complete the table by rounding the original number to: (a) 2 decimal places
(b) 1 decimal place (i) (ii)
(iii) (iv) (v)
Original number 12·419
84·3524 0·765
104·936 8·442
3. Copy and complete the table by rounding the original number to: (a) 3 significant figures
(b) 2 significant figures (i) (ii)
(iii) (iv) (v)
Original number 217·8
3·092 73·285
0·60828 0·003826
4. Copy and complete the table by converting the fraction to a decimal and then rounding. Fraction
Decimal (i) (ii) (iii)
_ 2
_ 4
_ 20
1 1 7
(iii) 0·55 (iv) 0·025
(v) 0·08 (vi) 0·6
__ 4 × 0·6
Rounded to one decimal place
(iv) (v) (vi) Fraction
_ 3
_ 8
_ 4
2 1 3
5. Convert the following decimals to fractions. Simplify where necessary. (i) 0·7 (ii) 0·13
6. (i) Convert 0·6 into a fraction and hence find 3 (ii) Convert 3
__ 4 into a decimal and hence find 3
__ 4 × 0·6
7. Copy the table below and put a tick (✓) in the correct box in each row to show whether each statement is always true, sometimes true, or never true.
Statement
(i) Adding two decimals gives a whole number. (ii) Decimals are less than 1. (iii) Converting a fraction to a decimal changes its value.
(iv) A number with two decimal places is bigger than a number with one decimal place.
(v) Dividing a decimal by a whole number reduces its value.