A fraction is a division: 3/8 = 3 ÷ 8 = 0.375. Or make the bottom 10, 100 or 1000: 7/20 = 35/100 = 0.35. Keep the sign: −7/20 = −0.35.
Worked example
Write 12 as a decimal: ?
Answer:0.5
A fraction is the top divided by the bottom. 12 means 1 ÷ 2. One way: 2 × 5 = 10, so 12 = 12 = 0.5. Answer: 0.5.
For grown-ups: Convert fractions to decimals by long division; terminating vs. repeating. Below: three problems to try with the worked answers, and a free printable sheet. Children can practise the same skill as a game, with no sign-up and no ads.
CCSS 7.NS.A.2d
What this practises, for teachers
Practices convert fractions to decimals by long division; terminating vs. repeating (7.NS.A.2d). A printable sheet with its answer key, worked answers on the page, no accounts.
A fraction is the top divided by the bottom. 110 means 1 ÷ 10. The bottom is already 10, so 110 = 0.1. Answer: 0.1.
Write 310 as a decimal: ?
Show the answer and how
Answer:0.3
A fraction is the top divided by the bottom. 310 means 3 ÷ 10. The bottom is already 10, so 310 = 0.3. Answer: 0.3.
Write −18 as a decimal: ?
Show the answer and how
Answer:−0.125
A fraction is the top divided by the bottom. 18 means 1 ÷ 8. One way: 8 × 125 = 1000, so 18 = 18 = 0.125. The number is negative, so the decimal is too. Answer: −0.125.