Maths 1º ESO
FRACTIONS 1 1) What fraction of the boxes are coloured in? a) b) c)
2) Work out these amounts: a)
2 of £10 5
b)
3 of 3 kg 4
c)
3) Write the fractions in its lowest terms:
15 = 20 25 e) = 30
a)
d)
2 of 14€ 7
33 = 22 26 f) = 39
3 of 2 km 4
27 = 99 21 g) = 35
b)
c)
4) Divide each cross into the given fraction: a) HALVES
d)
b) QUARTERS
c) FIFTHS
d) EIGHTHS
5) Work out the value of x in each one of these:
18 24 14 x b) = = 33 x 49 14 2 6) I ate of my 20 candies. How many do I have left? 5
a)
7) Four kids have a pizza to share equally. What fraction of pizza did each kid get? 8) Lewis has 5 euros. This is only one-fourth of the money he had last week. How much did he have last week? 9) Mary has 21 crayons and she has to give 2/7 of them to Ben. How many crayons Ben got from Mary? 10) There were 540 students in a school. Friday was their trip day to the museum. 2/10 of the kids went by bus and 1/10 of the kids went by car. How many kids went by bus? How many kids went by car?
11) Write down these fractions: a)
6 13
b)
1 4
c)
2 5
d)
5 8
Maths 1º ESO
SOLUTIONS 1) What fraction of the boxes are coloured in? a) b) c)
13 25
9 19
d)
8 4 = 14 7
16 4 = 20 5
2) Work out these amounts:
2 of £10 → 10 ÷ 5 = 2 → 2 × 2 = 4 → £4 5 3 b) of 3 kg → 3 × 3 = 9 → 9 ÷ 4 = 2.25 → 2.25kg 4 2 c) of 14€ → 14 ÷ 7 = 2 → 2 × 2 = 4 → 4 € 7 3 d) of 2 km → 3 × 2 = 6 → 6 ÷ 4 = 1.5 km 4 a)
3) Write the fractions in its lowest terms:
15 3 = 20 4 25 5 e) = 30 6 a)
33 3 = 22 2 26 2 f) = 39 3 b)
27 3 = 99 11 21 3 g) = 35 5
c)
4) Divide each cross into the given fraction: a) HALVES
b) QUARTERS
c) FIFTHS
d) EIGHTHS
Maths 1º ESO 5) Work out the value of x in each one of these:
18 24 = → 18x = 33 ⋅ 24 → 18x = 792 → x = 792 ÷ 18 → x = 44 33 x 14 x b) = → 14 ⋅ 14 = 49x → 49x = 196 → x = 196 ÷ 49 → x = 4 49 14 2 6) I ate of my 20 candies. How many do I have left? 5 2 of 20 → 20 ÷ 5 = 4 → 4x2 = 8 5 I ate 8 candies → 20 − 8 = 12
a)
I have left 12 candies
7) Four kids have a pizza to share equally. What fraction of pizza did each kid get?
1 4
of pizza each kid got
8) Lewis has 5 euros. This is only one-fourth of the money he had last week. How much did he have last week? 5 x 4 = 20 He had 20€ last week 9) Mary has 21 crayons and she has to give 2/7 of them to Ben. How many crayons Ben got from Mary?
2 of 21 → 21 ÷ 7 = 3 → 3 × 2 = 6 7
Ben got 6 crayons from Mary
10) There were 540 students in a school. Friday was their trip day to the museum. 2/10 of the kids went by bus and 1/10 of the kids went by car. How many kids went by bus? How many kids went by car?
2 of 540 = 108 10 1 of 540 = 54 10
108 kids went by bus 54 kids went by car
6 six over thirteen, six thirteenths 13 1 2 b) one over four, one quarter c) two over five, two fifths 5 4 5 five over eight, five eighths d) 8 11) Write down these fractions: a)
Maths 1ยบ ESO