Asked: What percent of the wall was left unpainted?
Given: 84m², 21m²
Operation: Subtraction, Division, and Multiplication
Number Sentence:
84 - 21 = 63;
63 ÷ 84 = 0.75
0.75 × 100 = 75
Solution:
84m² - 21m² = 63m²
63m² ÷ 84m² = 0.75
0.75 × 100 = 75%
75% of the wall was left unpainted.
(Other method)
Operation: Division, Multiplication and Subtraction
21 ÷ 84 = 0.25
0.25 × 100 = 25
100 - 25 = 75
21m² ÷ 84m² = 0.25
100 - 25 = 75%
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Answers & Comments
Asked: What percent of the wall was left unpainted?
Given: 84m², 21m²
Operation: Subtraction, Division, and Multiplication
Number Sentence:
84 - 21 = 63;
63 ÷ 84 = 0.75
0.75 × 100 = 75
Solution:
84m² - 21m² = 63m²
63m² ÷ 84m² = 0.75
0.75 × 100 = 75%
75% of the wall was left unpainted.
(Other method)
Operation: Division, Multiplication and Subtraction
Number Sentence:
21 ÷ 84 = 0.25
0.25 × 100 = 25
100 - 25 = 75
Solution:
21m² ÷ 84m² = 0.25
0.25 × 100 = 25
100 - 25 = 75%
75% of the wall was left unpainted.