Ratios - Calculate Value from Item Ratio (Level 1)

This math topic focuses on the skill of calculating unknown values from given ratios. The problems require the students to determine the amount of one item based on its ratio to another item whose quantity is known. Examples include comparing the number of tennis balls to soccer balls, boys to girls, and cats to dogs. These challenges enhance students' abilities to work with ratios, enhancing their analytical skills in proportional reasoning within everyday contexts.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Ratios - Calculate Value from Item Ratio

Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.


How many tennis balls are there?

tennis balls : ?soccer balls : 4(tennis:soccer) = (5:4)\text{tennis balls : ?}\\\text{soccer balls : 4}\\\text{(tennis:soccer) = (5:4)}\\

Ratios - Calculate Value from Item Ratio Worksheet

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Math worksheet on 'Ratios - Calculate Value from Item Ratio (Level 1)'. Part of a broader unit on 'Rates and Ratios - Practice' Learn online: app.mobius.academy/math/units/rates_and_ratios_practice/
1
How many tennis balls are there?
A LaTex expression showing \text{tennis balls : ?}\\\text{soccer balls : 5}\\\text{(tennis:soccer) = (3:5)}\\
a
10
b
5
c
3
d
1
2
A LaTex expression showing \text{cats : 2}\\\text{dogs : ?}\\\text{(cats:dogs) = (2:3)}\\
How many dogs are there?
a
5
b
7
c
6
d
3
3
A LaTex expression showing \text{boys : 5}\\\text{girls : ?}\\\text{(boys:girls) = (5:3)}\\
How many girls are there?
a
3
b
2
c
1
d
9
4
A LaTex expression showing \text{boys : 3}\\\text{girls : ?}\\\text{(boys:girls) = (3:4)}\\
How many girls are there?
a
10
b
12
c
1
d
4
5
A LaTex expression showing \text{cats : 5}\\\text{dogs : ?}\\\text{(cats:dogs) = (5:2)}\\
How many dogs are there?
a
4
b
1
c
7
d
2
6
How many tennis balls are there?
A LaTex expression showing \text{tennis balls : ?}\\\text{soccer balls : 2}\\\text{(tennis:soccer) = (5:2)}\\
a
8
b
5
c
2
d
3
7
How many soccer balls are there?
A LaTex expression showing \text{tennis balls : 3}\\\text{soccer balls : ?}\\\text{(tennis:soccer) = (3:2)}\\
a
8
b
5
c
1
d
2