Math · Age 10 · Ratio, Proportion & Early Algebra
Substituting Values into Simple Formulas (Ex. 1)
Substitute small values into simple formulas, e.g. perimeter = 2(l + w).
Module
Ratio, Proportion & Early Algebra
Age
Age 10
Duration
10 min
Questions
5
What's in this exercise
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Question 1
Multiple choice
Using the formula P = 2(l + w), find P when l = 5 and w = 3.
Question 2
Multiple choice
Using Area = l × w, find the area when l = 7 cm and w = 4 cm.
Question 3
Multiple choice
Using the formula d = s × t, find d when s = 60 km/h and t = 3 hours.
Question 4
Sequence
Perimeters of squares with side n: P=4n. For n=1,2,3,4,5: 4, 8, 12, ___, 20. What is the missing value?
Question 5
True or false
Using P = 2(l + w), when l = 6 and w = 4, P = 20.