How to Read Tables, Charts, Blueprints, and Measurements on the ACT WorkKeys Applied Math Test
Many WorkKeys Applied Math mistakes happen before the calculation starts. This guide shows how to read workplace visuals the right way, choose the correct number, and avoid trap answers built around the wrong row, wrong column, wrong unit, or wrong scale.
Why table and chart questions feel harder than the math
The test taker sees a table, chart, schedule, label, blueprint, or measurement diagram. They grab the first number that looks useful. Then they do the arithmetic correctly with the wrong number.
That is why these questions feel frustrating. You may know how to multiply, divide, convert units, and calculate area, but still miss the problem because you read the row wrong, used the wrong column, skipped the unit, or treated a drawing measurement like a real measurement.
On WorkKeys Applied Math, the visual information is not decoration. It is often the source of the number you need. The calculator only helps after you identify the right row, column, scale, unit, or label.
The 4-step method for reading any WorkKeys visual
Step 1
Name the workplace task
Buy enough supplies, compare prices, read a blueprint length, calculate a shift total, or find how much material is needed.
Step 2
Identify the final unit
Decide whether the answer should be dollars, boxes, feet, square feet, hours, parts, gallons, or cases before you calculate.
Step 3
Pull numbers only after reading labels
Check the row label, column label, unit, category, time period, and scale before you use any number.
Step 4
Check whether the answer needs rounding
If the answer is boxes, rolls, cases, containers, trucks, or people, a decimal answer may need to round up.
Table-reading checklist
- What row matches the item, shift, machine, person, or material?
- What column matches the cost, quantity, time, or rate?
- Is the table showing per item, per box, per hour, or total?
- Does the question ask for one row, several rows, or a comparison?
- Does the final answer require adding, multiplying, subtracting, or dividing?
Chart-reading checklist
- What category does the question ask about?
- What time period does the question ask about?
- Does the chart show totals or rates?
- Is the question asking for a comparison, difference, total, or average?
- Are the units shown on the axis or in the heading?
Blueprint checklist
- Is the measurement on the drawing or in real life?
- Is there a scale such as 1 inch = 4 feet?
- Does the question ask for length, area, or perimeter?
- Are all measurements in the same unit?
- Does the answer need feet, inches, square feet, or another unit?
Example 1: Supply table
A company orders supplies using this chart: Gloves cost $18 per box and need 5 boxes. Safety glasses cost $24 per box and need 3 boxes. Ear plugs cost $12 per box and need 8 boxes.
What is the total cost of the gloves and ear plugs?
Step-by-step solution
The workplace task is to find the total cost for two supply items only.
Gloves: $18 × 5 = $90
Ear plugs: $12 × 8 = $96
Add only those two rows: $90 + $96 = $186
Answer: $186
Trap answer tip
Do not add the safety-glasses row just because it appears in the table. Use only the rows the question asks for.
Example 2: Production chart
A factory tracks parts produced by two machines. Morning: Machine A 180, Machine B 210. Afternoon: Machine A 165, Machine B 195. Evening: Machine A 150, Machine B 175.
How many more parts did Machine B produce than Machine A during the afternoon shift?
Step-by-step solution
The question is about one shift only: afternoon.
Machine B afternoon output = 195
Machine A afternoon output = 165
195 − 165 = 30 parts
Answer: 30 parts
Trap answer tip
A lot of misses happen because the test taker reads the morning row or evening row instead of the exact shift asked for.
Example 3: Scale drawing
A workplace diagram uses the scale 1 inch = 5 feet. On the drawing, a storage wall measures 4 inches.
What is the actual length of the wall?
Step-by-step solution
The workplace task is to convert drawing length to real length.
Each drawing inch represents 5 feet.
4 × 5 = 20 feet
Answer: 20 feet
Trap answer tip
Do not treat the 4-inch drawing measurement like the real measurement, and do not add 4 and 5 instead of using the scale.
How to tell area, perimeter, and volume apart
| Measurement type | Use it when... | Common clues |
|---|---|---|
| Area | Use it when the job covers a surface | flooring, paint, tile, carpet, wall covering, grass seed |
| Perimeter | Use it when the job goes around an edge | trim, fencing, edging, border, guard rail |
| Volume | Use it when the job cares about space inside a container | storage bins, boxes, tanks, cubic-foot capacity |
Example 4: Measurement label and package coverage
A label says one box of tile covers 32 square feet. A break room floor measures 15 feet by 13 feet.
How many boxes of tile are needed?
Step-by-step solution
The job is to buy enough tile, so this is an area question first.
Area = 15 × 13 = 195 square feet.
195 ÷ 32 = 6.09 boxes.
Because tile is bought in whole boxes, round up to 7 boxes.
Answer: 7 boxes
Trap answer tip
If your calculation gives square feet, you are not finished yet. The final unit here is boxes, and the workplace answer must cover the full floor.
Example 5: Schedule and elapsed time
A delivery driver starts at 7:45 a.m. and finishes at 2:15 p.m.
How many hours did the shift last?
Step-by-step solution
The question is asking for elapsed time.
7:45 a.m. to 12:00 p.m. = 4 hours 15 minutes
12:00 p.m. to 2:15 p.m. = 2 hours 15 minutes
Total = 6 hours 30 minutes = 6.5 hours
Answer: 6.5 hours
Trap answer tip
Thirty minutes is 0.5 hour, not 0.30 hour. Schedule questions often become time-conversion questions after you find the elapsed time.
Trap-answer patterns to watch for
- Using the right row label with the wrong column value
- Reading a drawing measurement as if it were the real measurement
- Forgetting that the answer needs boxes, cases, or rolls instead of square feet
- Skipping the scale on a blueprint-style question
- Using a total when the chart is showing a rate
- Pulling every row from a table instead of only the rows the question names
Final habit: label the unit before you calculate
The fastest way to improve on tables, charts, blueprints, and measurement prompts is to write the unit beside every number you use. That makes it easier to catch row mistakes, scale mistakes, and rounding mistakes before they become wrong answers.