This handy Spectrum Math Grade 4 Answer Key Chapter 6 Lesson 6.10 Adding Fractions with Unlike Denominators provides detailed answers for the workbook questions.

$$\frac{1}{10}$$ = $$\frac{10}{100}$$
because

Therefore…

Find the equivalent fraction. Then, add.

Question 1.
a.

$$\frac{19}{100}$$

Explanation:
To find the equivalent fraction for the given,
$$\frac{1}{10}$$ = $$\frac{9}{100}$$
first multiple the numerator and denominator with same number to equalize the denominator.

Therefore…

b.

$$\frac{22}{100}$$

Explanation:
To find the equivalent fraction for the given,
$$\frac{2}{10}$$ = $$\frac{2}{100}$$
first multiple the numerator and denominator with same number to equalize the denominator.

c.

$$\frac{45}{100}$$

Explanation:
To find the equivalent fraction for the given,
$$\frac{4}{10}$$ = $$\frac{5}{100}$$
first multiple the numerator and denominator with same number to equalize the denominator.

d.

$$\frac{77}{100}$$

Explanation:
To find the equivalent fraction for the given,
$$\frac{7}{10}$$ = $$\frac{7}{100}$$
first multiple the numerator and denominator with same number to equalize the denominator.

Question 2.
a.

$$\frac{100}{100}$$

Explanation:
To find the equivalent fraction for the given,
$$\frac{5}{10}$$ = $$\frac{50}{100}$$
first multiple the numerator and denominator with same number to equalize the denominator.

b.

$$\frac{11}{100}$$

Explanation:
To find the equivalent fraction for the given,
$$\frac{1}{10}$$ = $$\frac{1}{100}$$
first multiple the numerator and denominator with same number to equalize the denominator.

c.

$$\frac{48}{100}$$

Explanation:
To find the equivalent fraction for the given,
$$\frac{4}{10}$$ = $$\frac{8}{100}$$
first multiple the numerator and denominator with same number to equalize the denominator.

d.

$$\frac{65}{100}$$

Explanation:
To find the equivalent fraction for the given,
$$\frac{6}{10}$$ = $$\frac{5}{100}$$
first multiple the numerator and denominator with same number to equalize the denominator.

Question 3.
a.

$$\frac{52}{100}$$

Explanation:
To find the equivalent fraction for the given,
$$\frac{5}{10}$$ = $$\frac{2}{100}$$
first multiple the numerator and denominator with same number to equalize the denominator.

b.

$$\frac{36}{100}$$

Explanation:
To find the equivalent fraction for the given,
$$\frac{3}{10}$$ = $$\frac{6}{100}$$
first multiple the numerator and denominator with same number to equalize the denominator.

c.

$$\frac{83}{100}$$

Explanation:
To find the equivalent fraction for the given,
$$\frac{8}{10}$$ = $$\frac{3}{100}$$
first multiple the numerator and denominator with same number to equalize the denominator.

d.

$$\frac{33}{100}$$
$$\frac{3}{10}$$ = $$\frac{3}{100}$$