Math Drills
Ratio and Its Uses Review
B-5Word Problems
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What this worksheet covers
- Topic
- Ratio and Its Uses
A relationship between two quantities is written in a form such as 3:2, and children learn to find the value of the ratio and to simplify the ratio. Calculations and word problems that turn decimal and fraction ratios into whole-number ratios sit in the middle, and the work moves on to equivalent ratios and to sharing a whole in a given ratio.
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When simplifying, children subtract the same number from both sides, turning 6:4 into 4:2 where division was called for. In sharing, the whole gets divided by just one number of the ratio rather than by the sum, so the two shares no longer add back up to the whole.
Finding the value of a ratio, the skill fixed in this unit, supports a property studied in the next unit, Enlargement and Reduction: that corresponding sides keep an equal ratio. The back-and-forth between fractions and decimals practiced in Mixed Operations with Fractions and Decimals is put to work here in rewriting a ratio in whole numbers.
- Ratio Values and Simplifying Ratios · Ratio Value (Word Problems)1 question
- Ratio Values and Simplifying Ratios · Finding and Simplifying Ratios (Word Problems)1 question
- Ratio Values and Simplifying Ratios · Converting Decimal and Fraction Ratios to Whole-Number Ratios (Word Problems)1 question
- Equal Ratios and Their Uses · Sharing Using a Ratio (Calculation)1 question
- Equal Ratios and Their Uses · Using Equal Ratios (Word Problems)1 question
- Equal Ratios and Their Uses · Sharing Using a Ratio (Word Problems)1 question
Questions & answers
Problems and answers on this worksheet
These are the problems in “Ratio and Its Uses”, shown with their answers.
(1)Class 1 has 28 students and Class 2 has 35 students. Find the value of the ratio of the ratio of numbers of class 1 to class 2. Answer □
Answer: 0.8
(2)The older brother is 15 years old and the younger sister is 10 years old. Express the ratio of the older brother's age to the younger sister's age in its simplest form. Answer □
Answer: 3:2
(3)There is 0.9L of salad oil and 0.6L of vinegar. Express the ratio of the amounts of salad oil to vinegar in the simplest whole-number form. Answer □
Answer: 3:2
(4)Divide 160 in the ratio 7:9. Answer □and□
Answer: 70, 90
(5)The ratio of the number of black pencils to red pencils is 3:4, and there are 15 black pencils. How many red pencils are there? Answer □
Answer: 20pencils
(6)Divide 180mL of water in the ratio 4:5. How many mL is each part? Answer □and□
Answer: 80mL, 100mL
What to do next
More worksheets in this unit
Ratio Values and Simplifying RatiosRatio Values and Simplifying Ratios Calculation (Decimal-Fraction Ratios)
Ratio Values and Simplifying RatiosRatio Values and Simplifying Ratios Word Problems
Equal Ratios and Their UsesEqual Ratios and Their Uses Calculation (Dividing in a Ratio)
Equal Ratios and Their UsesEqual Ratios and Their Uses Fill in the Blank
Equal Ratios and Their UsesEqual Ratios and Their Uses Word Problems
Ratio and Its Uses ReviewRatio and Its Uses Review Calculation
