MATH 225N WEEK 4 COMPREHENSIVE STUDY
GUIDE 2026 MATHEMATICAL CONCEPTS AND
PROBLEM SOLVING SKILLS
◉ .025 as a fraction and percent
Answer: 1/40, 2.5%
◉ 5/8 as a decimal and percent
Answer: .625, 62.5%
◉ 36 is 40% of what number?
Answer: 90
◉ 60% of 75 is what number?
Answer: 45
◉ 22 is what percent of 20?
Answer: 110%
◉ 37.5% of 80 is what number
Answer: 30
, ◉ Write in order from least to greatest: 3.48, 4.8, 3.75, 4 2/5, 4.41
Answer: 3.48, 3.75, 4 2/5, 4.41, 4.8
◉ 0.21÷0.3
Answer: 0.7
◉ 18 is 60% of what number?
Answer: 30
◉ 7.63÷100
Answer: .0763
◉ __x.001+0.0123
Answer: .0000123
◉ 9⁰=
Answer: 9
◉ In the fraction 261/29, what is the divisor?
Answer: 29
GUIDE 2026 MATHEMATICAL CONCEPTS AND
PROBLEM SOLVING SKILLS
◉ .025 as a fraction and percent
Answer: 1/40, 2.5%
◉ 5/8 as a decimal and percent
Answer: .625, 62.5%
◉ 36 is 40% of what number?
Answer: 90
◉ 60% of 75 is what number?
Answer: 45
◉ 22 is what percent of 20?
Answer: 110%
◉ 37.5% of 80 is what number
Answer: 30
, ◉ Write in order from least to greatest: 3.48, 4.8, 3.75, 4 2/5, 4.41
Answer: 3.48, 3.75, 4 2/5, 4.41, 4.8
◉ 0.21÷0.3
Answer: 0.7
◉ 18 is 60% of what number?
Answer: 30
◉ 7.63÷100
Answer: .0763
◉ __x.001+0.0123
Answer: .0000123
◉ 9⁰=
Answer: 9
◉ In the fraction 261/29, what is the divisor?
Answer: 29
