Word Problem: A complex math question written in sentences that tells a multi-step story.
Measurement: Using numbers to describe how long, heavy, full, or how much time something is.
Units: Standard amounts used to measure (inches, pounds, cups, minutes).
Operations: Addition (+), subtraction (-), multiplication (×), division (÷).
Multi-step: Problems requiring more than one operation to solve.
Fractions: Parts of a whole (½, ¼, ¾).
Decimals: Numbers with tenths and hundredths (.5, .25).
Percentages: Parts per hundred (%).
Ratios: Comparing two quantities (2:1).
- Converting between different units (feet to inches, cups to quarts)
- Solving multi-step problems with multiple operations
- Using multiplication and division in word problems
- Working with fractions in measurement (½ cup, ¾ inch)
- Calculating with decimals (.5 feet, 1.25 pounds)
- Working with percentages and ratios
- Finding averages and totals
- Working with elapsed time
Length: 25.5 feet
Width: 18.75 feet
Extra needed: 10%
Question: Total fencing needed?
This is a multi-step problem. First calculate perimeter, then add 10% extra.
Perimeter = 2 × (length + width)
Perimeter = 2 × (25.5 + 18.75) = 2 × 44.25 = 88.5 feet
10% of 88.5 = 0.10 × 88.5 = 8.85 feet
Total = Perimeter + Extra = 88.5 + 8.85 = 97.35 feet
The company needs to buy 97.35 feet of fencing.
The company needs to buy 97.35 feet of fencing.
• Perimeter Rule: P = 2(l + w)
• Percentage Rule: 10% = 0.10
• Addition Rule: 88.5 + 8.85 = 97.35
Ratio: 3:2 (flour:sugar)
Cakes needed: 25
Flour per cake: 1.2 pounds
Question: Sugar needed and total weight?
This is a ratio problem. First calculate total flour, then use ratio to find sugar, then add for total.
25 cakes × 1.2 pounds = 30 pounds of flour
Flour:Sugar = 3:2
If 3 parts = 30 pounds, then 1 part = 10 pounds
So 2 parts (sugar) = 20 pounds
Total = Flour + Sugar = 30 + 20 = 50 pounds
The bakery needs 20 pounds of sugar and 50 pounds total.
The bakery needs 20 pounds of sugar and 50 pounds total.
• Multiplication Rule: 25 × 1.2 = 30
• Ratio Rule: 3:2 means for every 3 parts flour, use 2 parts sugar
• Addition Rule: 30 + 20 = 50
Pool capacity: 12,000 gallons
Current level: 75%
Evaporation rate: 2.5% per week
Desired level: 90%
Question: Water after 2 weeks and additional needed?
This is a percentage problem. First calculate current water, then apply evaporation, then calculate additional needed.
75% of 12,000 = 0.75 × 12,000 = 9,000 gallons
2.5% of 9,000 = 0.025 × 9,000 = 225 gallons
After 1st week: 9,000 - 225 = 8,775 gallons
2.5% of 8,775 = 0.025 × 8,775 = 219.375 gallons
After 2nd week: 8,775 - 219.375 = 8,555.625 gallons
90% of 12,000 = 0.90 × 12,000 = 10,800 gallons
10,800 - 8,555.625 = 2,244.375 gallons
After 2 weeks there will be 8,555.625 gallons, and 2,244.375 more gallons are needed.
After 2 weeks there will be 8,555.625 gallons, and 2,244.375 more gallons are needed.
• Percentage Rule: 75% = 0.75
• Subtraction Rule: 9,000 - 225 = 8,775
• Decimal Multiplication: 0.025 × 8,775 = 219.375
Operating hours: 16 per day
Days per week: 5
Normal rate: 450 units per hour
Efficiency on Tue/Thu: 80%
Production increase: 15%
Question: Weekly production and additional units?
This is a multi-step problem with percentages. Calculate normal days, reduced efficiency days, then total.
16 hours × 450 units/hour = 7,200 units per day
7,200 × 80% = 7,200 × 0.80 = 5,760 units per day
Normal days: 3 days × 7,200 = 21,600 units
Reduced days: 2 days × 5,760 = 11,520 units
Total: 21,600 + 11,520 = 33,120 units
15% of 33,120 = 0.15 × 33,120 = 4,968 additional units
The factory produces 33,120 units per week, and a 15% increase would be 4,968 additional units.
The factory produces 33,120 units per week, and a 15% increase would be 4,968 additional units.
• Multiplication Rule: 16 × 450 = 7,200
• Percentage Rule: 80% = 0.80
• Addition Rule: 21,600 + 11,520 = 33,120
Ratio of fields: 4:3:2
Total area: 180 acres
Field A yield: 2.5 tons per acre
Field B yield: 1.8 tons per acre
Field C yield: 2.1 tons per acre
Loss to pests: 15%
Price per ton: $120
Question: Actual harvest and total revenue?
This is a complex multi-step problem with ratios, percentages, and multiplication. First find field areas, then calculate yields, apply loss, then calculate revenue.
Total ratio parts: 4 + 3 + 2 = 9 parts
Each part: 180 ÷ 9 = 20 acres
Field A: 4 × 20 = 80 acres
Field B: 3 × 20 = 60 acres
Field C: 2 × 20 = 40 acres
Field A: 80 × 2.5 = 200 tons
Field B: 60 × 1.8 = 108 tons
Field C: 40 × 2.1 = 84 tons
Total: 200 + 108 + 84 = 392 tons
Lost: 15% of 392 = 0.15 × 392 = 58.8 tons
Actual harvest: 392 - 58.8 = 333.2 tons
Revenue: 333.2 × $120 = $39,984
The actual harvest is 333.2 tons, generating $39,984 in revenue.
The actual harvest is 333.2 tons, generating $39,984 in revenue.
• Ratio Division: 4:3:2 parts of 180 acres
• Multiplication Rule: 80 × 2.5 = 200
• Percentage Rule: 15% = 0.15
• Subtraction Rule: 392 - 58.8 = 333.2
• Multiplication Rule: 333.2 × $120 = $39,984