Math in Focus Grade 4 Chapter 7 Practice 7 Answer Key Fractions and Decimals

Practice the problems of Math in Focus Grade 4 Workbook Answer Key Chapter 7 Practice 7 Fractions and Decimals to score better marks in the exam.

Write each fraction as a decimal.

Example
\(\frac{9}{10}\) = 0.9

Question 1.
\(\frac{7}{10}\) = ____
Answer:
\(\frac{7}{10}\) = 0.7

Explanation:
\(\frac{7}{10}\) = 7 ÷ 10 = 0.7.

Question 2.
\(\frac{3}{100}\) = ____
Answer:
\(\frac{3}{100}\) = 0.03.

Explanation:
\(\frac{3}{100}\) = 3 ÷ 100 = 0.03.

Question 3.
\(\frac{51}{100}\) = ____
Answer:
\(\frac{51}{100}\) = 0.51.

Explanation:
\(\frac{51}{100}\) = 51 ÷ 100 = 0.51.

Express each fraction as a decimal. Hint: Make the denominator 10 or 100.

Example
\(\frac{2}{5}\) = \(\frac{4}{10}\)
= 0.4

Question 4.
\(\frac{1}{2}\) = ____
Answer:
\(\frac{1}{2}\) = 0.5.

Explanation:
\(\frac{1}{2}\) = \(\frac{5}{10}\) = 0.5.

Question 5.
\(\frac{5}{2}\) = ____
Answer:
\(\frac{5}{2}\) = 2.5.

Explanation:
\(\frac{5}{2}\) = \(\frac{25}{10}\) = 2.5.

Question 6.
\(\frac{5}{4}\) = ____
Answer:
\(\frac{5}{4}\) = 1.25.

Explanation:
\(\frac{5}{4}\) = \(\frac{125}{100}\) = 1.25.

Question 7.
\(\frac{7}{20}\) = ____
Answer:
\(\frac{7}{20}\) = 0.35.

Explanation:
\(\frac{7}{20}\) = \(\frac{35}{100}\) = 0.35.

Question 8.
\(\frac{2}{25}\) = ____
Answer:
\(\frac{2}{25}\) = 0.08.

Explanation:
\(\frac{2}{25}\) = \(\frac{8}{100}\) = 0.08.

Write each mixed number as a decimal.

Question 9.
3\(\frac{5}{10}\) = ____
Answer:
3\(\frac{5}{10}\) = 3.5.

Explanation:
3\(\frac{5}{10}\) = (30 + 5) ÷ 10
= \(\frac{35}{10}\)
= 3.5.

Question 10.
6\(\frac{43}{100}\) = ____
Answer:
6\(\frac{43}{100}\) = 6.43..

Explanation:
6\(\frac{43}{100}\) = (600 + 43) ÷ 100
= \(\frac{643}{100}\)
= 6.43.

Question 11.
8\(\frac{3}{5}\) = ____
Answer:
8\(\frac{3}{5}\) = 8.6.

Explanation:
8\(\frac{3}{5}\) = (40 + 3) ÷ 5
= \(\frac{43}{5}\)
= \(\frac{86}{10}\)
= 8.6.

Question 12.
10\(\frac{3}{20}\) = ____
Answer:
10\(\frac{3}{20}\) = 10.15.

Explanation:
10\(\frac{3}{20}\) = (200 + 3) ÷ 20.
= \(\frac{203}{20}\) = \(\frac{3}{20}\)
= \(\frac{1015}{100}\)
= 10.15.

Write each decimal as a fraction or mixed number in simplest form.

Question 13.
0.3
Answer:
0.3 = \(\frac{3}{10}\)

Explanation:
0.3 = \(\frac{3}{20}\)

Question 14.
0.5
Answer:
0.5 = \(\frac{5}{10}\)

Explanation:
0.5 = \(\frac{5}{10}\)

Question 15.
5.2
Answer:
5.2 = \(\frac{52}{10}\)

Explanation:
5.2 = \(\frac{52}{10}\)

Question 16.
0.25
Answer:
0.25 = \(\frac{25}{100}\)

Explanation:
0.25 = \(\frac{25}{100}\)

Question 17.
4.08
Answer:
4.08 = \(\frac{408}{100}\)

Explanation:
4.08 = \(\frac{408}{100}\)

Question 18.
3.45
Answer:
3.45 = \(\frac{345}{100}\)

Explanation:
3.45 = \(\frac{345}{100}\)