Name:
a) How many circles? _____________ b) How many squares? ____________
c) How many shapes all together? ____________
Ratios can be expressed as a fraction
Of 12 shapes, 4 are circles
l Of 12 shapes, 8 are squares
l
The fraction of circles is 4 out of a total of 12 The fraction of squares is 8 out of a total of 12
The fraction of circles (4) to squares (8) 2.
4:12
8:12
4
= 12
4
= 12
=4
Grade 7 Mathematics Term 3: Number and Number Operations - Ratio and Rate
GRADE 7
Ratio
8
Look at the picture above:
What is the ratio of trees to birds?________________________________________
What is the ratio of houses to people?____________________________________
What is the fraction of houses to trees? __________________________________
What is the fraction of people to the total of trees and birds? ________________
3. 2 l of juice concentrate is mixed with 10 l of water. What is the ratio of juice
concentrate to water? (Write ratios in simplest form)
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
4. Michelle scored 30 marks for her project while Sue scored 60 marks for her
project.
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What is the ratio of Michelle’s mark to Sue’s mark? (Simplest form).
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
5. Row 1 and Row 2 are in the ratio of 1:7. Fill in the missing values:
Row 1 1 510
Row 27
21315
700
6. If 3 books cost R27,00 , how much will 7 books cost?
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
GRADE 7
Grade 7 Mathematics Term 3: Number and Number Operations - Ratio and Rate
Ratio (2)
7. Share R80,00 between Sam and Joe in a Ratio of 60:20
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
© e-classroom 2013 www.e-classroom.co.za
Ratios can be expressed as a fraction
Of 12 shapes, 4 are circles
l Of 12 shapes, 8 are squares
l
The fraction of circles is 4 out of a total of 12 The fraction of squares is 8 out of a total of 12
The fraction of circles (4) to squares (8) 2.
b) How many squares? 4:12
8:12
=
=
=
4
12
8
12
4
8
8
Grade 7 Mathematics Term 3: Number and Number Operations - Ratio and Rate
a) How many circles? 4 c) How many shapes all together?
12
GRADE 7
Ratio: Answer Sheet
Look at the picture above:
What is the ratio of trees to birds?
4:11
What is the ratio of houses to people?
3:7
3
What is the fraction of houses to trees? 4
7
What is the fraction of people to the total of trees and birds? 15
3. 2 l of juice concentrate is mixed with 10 l of water. What is the ratio of juice
concentrate to water? (Write ratios in simplest form)
2 l : 10 l = 1 l : 5 l
© e-classroom 2013 www.e-classroom.co.za
4. Michelle scored 30 marks for her project while Sue scored 60 marks for her
project.
What is the ratio of Michelle’s mark to Sue’s mark? (Simplest form).
30 = 3 = 1
60 6 2
and 30:60 = 3:6 = 1:2
5. Row 1 and Row 2 are in the ratio of 1:7. Fill in the missing values:
Row 1 1351045
100
Row 2 7 213570315
700
GRADE 7
Grade 7 Mathematics Term 3: Number and Number Operations - Ratio and Rate
Ratio: Answer Sheet(2)
6. If 3 books cost R27,00 , how much will 7 books cost?
R27,00÷3=R9,00/book
R9,00×7=R63,00 for 7 books
7. Share R80,00 between Sam and Joe in a Ratio of 60:20
R60,00:R20,00
© e-classroom 2013 www.e-classroom.co.za