Intro Math (Fractions)

Question 1

1/4 + 2/4 = ?

Answer 1

3/4 (add the numerators together, denominator stays the same)

Question 2

5/3 - 3/3 = ?

Answer 2

2/3 (subtract the numerators, denominator stays the same)

Question 3

(2x + 3)/5 + (2x + 1)/5 = ?

Answer 3

(4x + 4)/5 (add the numerators together, denominator stays the same)

Question 4

(5x + 4)/2 - (3x - 3)/2 = ?

Answer 4

(2x + 7)/2 (subtract the numerators, denominator stays the same)

Question 5

3/10 - 2/10 = ?

Answer 5

1/10 (subtract the numerators, denominator stays the same)

Question 6

15/16 - 12/16 = ?

Answer 6

3/16 (subtract the numerators, denominator stays the same)

Question 7

(2/9) . (3/7) = ?

Answer 7

6/63 (top times top, bottom times bottom) which simplifies to 2/21

Question 8

((3x)/4) . ((2x)/3) = ?

Answer 8

(6x^2)/12 (top times top, bottom times bottom) which simplifies to (1x^2)/2

Question 9

((5x)/3) . (2/4) = ?

Answer 9

(10x)/12 (top times top, bottom times bottom) which simplifies to (5x)/6

Question 10

(1/2) . (5/7) = ?

Answer 10

5/14 (top times top, bottom times bottom)

Question 11

(2/9) ÷ (3/7) = ?

Answer 11

(2/9) ÷ (3/7) = (2/9) . (7/3) (flip the second fraction and multiply) = 14/27 (top times top, bottom times bottom)

Question 12

((3x)/4) ÷ (3)/(2x)) = ?

Answer 12

((3x)/4) ÷ (3)/(2x)) = ((3x)/4) . ((2x)/3) (flip the second fraction and multiply) = (6x^2)/12 (top times top, bottom times bottom) which simplifies to (1x^2)/2

Question 13

((5x)/3) ÷ (2/4) = ?

Answer 13

((5x)/3) ÷ (2/4) = ((5x)/3) . (4/2) (flip the second fraction and multiply) = (20x)/6 (top times top, bottom times bottom) which simplifies to (10x)/3

Question 14

(1/2) ÷ (5/7) = ?

Answer 14

(1/2) ÷ (5/7) = (1/2) . (7/5) (flip the second fraction and multiply) = (7/10) (top times top, bottom times bottom)