Measuring Solutions for Grade 1

Learn to solve measurement problems involving length, height, weight, and capacity with detailed exercises and solutions.

Measuring Solutions 1-3
1 Length Solution
Problem 1
Problem: Tom's rope is 7 feet long. He cuts off 3 feet. How long is his rope now?
Definition:

Length: How long something is from one end to the other.

Subtract: Taking away a part from the whole.

Remaining: What is left after taking something away.

Subtraction method:
  1. Start with the original length
  2. Subtract the amount that was cut off
  3. Calculate the remaining length
  4. Include the unit in your answer
Step 1: Identify the original length

Original rope = 7 feet long

Step 2: Identify what was cut off

Cut off = 3 feet

Step 3: Subtract to find remaining length

7 feet - 3 feet = 4 feet

Step 4: State the final answer

The rope is now 4 feet long.

Applied rules:

• Subtraction: When something is taken away, subtract

• Same units: Both measurements use feet

• Word clues: "cut off" indicates subtraction

Final answer:

The rope is now 4 feet long.

Tip: Draw a picture showing the original rope and the cut-off part.
Tip: Use your fingers to count backwards: 7, 6, 5, 4.
2 Height Solution
Problem 2
Problem: A plant was 5 inches tall. It grew 4 more inches. How tall is the plant now?
Definition:

Height: How tall something is from bottom to top.

Add: Combining amounts to make a larger total.

Grew: Increased in size or height.

Addition method:
  1. Start with the original height
  2. Add the amount of growth
  3. Calculate the new height
  4. Include the unit in your answer
Step 1: Identify the original height

Original height = 5 inches

Step 2: Identify the growth

Growth = 4 inches

Step 3: Add to find new height

5 inches + 4 inches = 9 inches

Step 4: State the final answer

The plant is now 9 inches tall.

Applied rules:

• Addition: When something grows or increases, add

• Same units: Both measurements use inches

• Word clues: "grew" indicates addition

Final answer:

The plant is now 9 inches tall.

Tip: Count on your fingers: 5, 6, 7, 8, 9.
Tip: Think of growing taller like stacking blocks higher.
3 Weight Solution
Problem 3
Problem: Mom bought 6 pounds of apples. She ate 2 pounds. How many pounds of apples are left?
Definition:

Weight: How heavy something is.

Pound: A unit for measuring weight.

Left: What remains after some was taken away.

Subtraction method:
  1. Start with the original weight
  2. Subtract the amount eaten
  3. Calculate what remains
  4. Include the unit in your answer
Step 1: Identify the original weight

Original apples = 6 pounds

Step 2: Identify what was eaten

Eaten = 2 pounds

Step 3: Subtract to find remaining weight

6 pounds - 2 pounds = 4 pounds

Step 4: State the final answer

There are 4 pounds of apples left.

Applied rules:

• Subtraction: When something is eaten/consumed, subtract

• Same units: Both measurements use pounds

• Word clues: "ate" and "left" indicate subtraction

Final answer:

There are 4 pounds of apples left.

Tip: Imagine eating 2 apples from a basket of 6.
Tip: Count backwards: 6, 5, 4.
Complete Learning Summary

Everything About Measuring Solutions

Key Definitions

Measurement: Finding out how big, long, tall, or heavy something is.

Length: How long something is from end to end.

Height: How tall something is from bottom to top.

Weight: How heavy something is.

Capacity: How much liquid something can hold.

Core Rules & Principles

• Always use the same units when comparing or calculating.

• To find remaining amount, subtract the taken away from the original.

• To find total after addition, add to the original amount.

• Look for keywords that indicate addition or subtraction.

• Check your answer to make sure it makes sense.

Step-by-Step Methods

1. Read the problem carefully and identify key information.

2. Determine what operation to use (addition or subtraction).

3. Identify the original amount and the change.

4. Perform the calculation.

5. Write your answer with the correct unit.

Examples & Practice

Simple: 5 feet - 2 feet = 3 feet remaining.

Medium: 4 inches + 3 inches = 7 inches total height.

Advanced: 8 pounds - 3 pounds eaten = 5 pounds left.

Real-world: Measuring ingredients, comparing heights, weighing groceries.

Tips & Tricks

• Look for action words: "cut", "ate", "used", "removed" = subtract.

• Look for growth words: "grew", "added", "more", "increased" = add.

• Always include the unit (feet, inches, pounds) in your answer.

• Draw pictures to help visualize the problem.

• Use your fingers or objects to count if needed.

Memory Aids

• "Take away means subtract!"

• "Grow up means add more!"

• "Same units for safe math!"

• "Check your answer makes sense!"

• "Words tell us what to do!"

Questions & Answers

Measuring Solutions Q&A

Question: How do I know if I should add or subtract in a measurement problem?

Answer: Look for clue words in the problem!

  • Add when: "more", "grew", "added", "increased", "total", "altogether"
  • Subtract when: "less", "cut", "ate", "used", "removed", "left", "remaining"

Also think about what's happening: If something is getting bigger or being added to, use addition. If something is being taken away or getting smaller, use subtraction.

Example: "Plant grew 3 inches" → Add (something increased). "Cut 2 feet" → Subtract (something decreased).

Question: My child often forgets to include the unit in their answer. How can I help them remember?

Answer: Units are crucial for measurement! Try these strategies:

  • Have your child underline or circle the unit in the problem when reading
  • Practice writing the unit after every number during calculations
  • Remind them that units tell us what kind of measurement it is
  • Create a habit of always asking "What unit do I need?"
  • Practice with real objects and emphasize the units

For example, say "The answer is 4 feet" not just "The answer is 4". Without the unit, the answer could mean 4 inches, 4 pounds, or 4 anything!

Make it fun: "4 what? 4 feet! 4 inches! 4 pounds! The unit matters!"

Question: What if I get confused about which number to start with?

Answer: Look for the words that tell you the starting point!

  • "was", "started with", "had", "originally" - these tell you the beginning amount
  • This is usually the larger number in subtraction problems
  • In addition problems, this is the first number you add to

For example: "Tom had 7 feet of rope" - 7 feet is where you start. Then he cut off 3 feet, so you subtract 3 from 7.

Always look for the sentence that tells you the original or starting amount - that's your first number!