Addition and Subtraction Word Problems Key Words

Master key words that indicate addition and subtraction operations in word problems through these 5 detailed exercises with visual learning tools.

Key Words Infographic
📚 + 📚 = Total!
Word Problem Keywords
Key definitions:

Addition Keywords: Words that signal adding numbers together

Subtraction Keywords: Words that signal taking away or finding differences

Problem Solving Strategy: Identify keywords to determine the operation needed

+
ADDITION
• More
• Together
• Total
• Sum
• Altogether
• Combined
−
SUBTRACTION
• Less
• Fewer
• Left
• Remaining
• Difference
• Take away
Problem Solving Method:
  1. Read Carefully: Read the entire word problem
  2. Find Keywords: Look for addition or subtraction keywords
  3. Identify Numbers: Find the numbers involved
  4. Set Up Equation: Write the mathematical equation
  5. Solve: Calculate the answer
  6. Check: Make sure the answer makes sense
Tip 1: Draw pictures to visualize the problem.
Tip 2: Circle or underline key words in the problem.
Tip 3: Ask yourself: "Am I putting things together or taking them apart?"
Common Addition Words: "more", "total", "altogether", "sum", "combined"
Common Subtraction Words: "left", "remaining", "fewer", "less", "difference"
Solution: Exercises 1 to 3
1 Addition Word Problem
Exercise 1
Sarah has 5 apples. Her mom gives her 3 more apples. How many apples does Sarah have altogether?
Keyword Analysis:

"More" and "Altogether" are addition keywords indicating we need to combine quantities.

Step-by-step Solution:
  1. Identify the starting amount: 5 apples
  2. Identify what's added: 3 more apples
  3. Keywords "more" and "altogether" indicate addition
  4. Set up the equation: 5 + 3 = ?
  5. Calculate: 5 + 3 = 8
5 apples
+
3 apples
=
8 apples
Step 1: Identify the keyword

The word "more" indicates addition. The word "altogether" also signals we need to find a total.

Step 2: Set up the equation

Starting amount + Additional amount = Total amount

5 + 3 = 8

Step 3: Solve and check

5 + 3 = 8. Does this make sense? Yes, Sarah now has 8 apples total.

Sarah has 8 apples altogether.
Final answer:

Sarah has 8 apples altogether.

Applied rules:

• Keyword Recognition: "more" and "altogether" signal addition

• Number Identification: 5 and 3 are the numbers to add

• Equation Setup: Combine the quantities

2 Subtraction Word Problem
Exercise 2
Tom had 8 cookies. He ate 3 cookies. How many cookies are left?
Keyword Analysis:

"Ate" and "Left" are subtraction keywords indicating we need to take away.

8 cookies
−
3 cookies
=
5 cookies
Step 1: Identify the keyword

The word "ate" means something was taken away. The word "left" asks for the remaining amount.

Step 2: Set up the equation

Starting amount - Amount taken away = Remaining amount

8 - 3 = 5

Step 3: Solve and check

8 - 3 = 5. Does this make sense? Yes, Tom has 5 cookies remaining.

Tom has 5 cookies left.
Final answer:

Tom has 5 cookies left.

Applied rules:

• Keyword Recognition: "ate" and "left" signal subtraction

• Number Identification: 8 is starting amount, 3 is taken away

• Equation Setup: Subtract to find remaining amount

3 Addition with Total
Exercise 3
There are 4 red balls and 6 blue balls in a basket. What is the total number of balls?
Keyword Analysis:

"Total" is an addition keyword indicating we need to combine both groups.

4 red balls
+
6 blue balls
=
10 balls
Step 1: Identify the keyword

The word "total" indicates we need to add both groups together.

Step 2: Identify the groups

Group 1: 4 red balls, Group 2: 6 blue balls

Step 3: Set up and solve

4 + 6 = 10. The total number of balls is 10.

There are 10 balls in total.
Final answer:

There are 10 balls in total.

Applied rules:

• Keyword Recognition: "total" signals addition

• Group Identification: Two separate groups to combine

• Combination: Add both groups for the final total

Solution: Exercises 4 to 5
4 Subtraction with Difference
Exercise 4
Lisa has 9 stickers. She gives 4 stickers to her friend. How many stickers does Lisa have now?
Keyword Analysis:

"Gives" and "Now" indicate subtraction as something is being taken away.

9 stickers
−
4 stickers
=
5 stickers
Step 1: Identify the keyword

The word "gives" means Lisa is giving away stickers, so we subtract.

Step 2: Set up the equation

Original amount - Given away = Remaining amount

9 - 4 = 5

Step 3: Solve and verify

9 - 4 = 5. Lisa now has 5 stickers, which makes sense.

Lisa has 5 stickers now.
Final answer:

Lisa has 5 stickers now.

Applied rules:

• Keyword Recognition: "gives" indicates subtraction

• Amount Tracking: Original minus given equals remaining

• Verification: Check that answer is reasonable

5 Combined Addition Problem
Exercise 5
In the morning, 3 children came to school. In the afternoon, 2 more children came. How many children came to school altogether?
Keyword Analysis:

"More" and "Altogether" are addition keywords showing we need to combine morning and afternoon arrivals.

3 children
+
2 children
=
5 children
Step 1: Identify the keywords

"More" indicates additional children arrived, "altogether" asks for the total.

Step 2: Identify the amounts

Morning: 3 children, Afternoon: 2 more children

Step 3: Add and conclude

3 + 2 = 5. A total of 5 children came to school.

5 children came to school altogether.
Final answer:

5 children came to school altogether.

Applied rules:

• Time-Based Addition: Different times but same action (coming to school)

• Keyword Recognition: "more" and "altogether" signal combination

• Total Calculation: Combine all instances of the same activity

Questions & Answers

Question: My first grader gets confused between addition and subtraction keywords. They often see "left" as addition because they think "left" means more time. How can I help them differentiate?

Answer: This is a common confusion! Here are effective strategies:

  • Contextual Clues: Teach them to look at the whole sentence. "How many are left?" usually follows someone taking something away.
  • Action Words: Focus on action words: "gave away", "ate", "used", "lost" all mean subtraction.
  • Physical Demonstration: Use actual objects. Start with 8 blocks, take 3 away, then ask "How many are left?"
  • Memory Phrase: "Left" means what REMAINS after taking away.

Create a keyword sorting activity where they categorize words under addition/subtraction headers. Practice with sentences like "I have 5 toys and get 2 more" vs "I have 5 toys and give away 2".

Question: Sometimes I see "and" in a word problem. Should I always add when I see "and"? Like in "Sarah has 3 cats and 2 dogs" - do I add them?

Answer: Great question! "And" doesn't always mean addition. It depends on the question:

  • If the question asks for "total" or "altogether": YES, add them (3 + 2 = 5 pets total)
  • If the question asks for just one part: NO, don't add (just count cats or dogs separately)
  • "And" often connects different parts of information, but addition happens when we combine for a total

Always read the ENTIRE problem and focus on what the question is asking. The keyword is often in the question part, not just the story part!

Question: Are there any fun activities I can do at home to reinforce these key words? My child learns better when having fun.

Answer: Absolutely! Here are engaging activities:

  • Keyword Hunt: Create word searches with addition/subtraction keywords
  • Story Time: Read simple stories and identify keywords together
  • Cooking Math: "We have 4 eggs, we need 2 more" (addition) or "We used 3 cups, how many are left?" (subtraction)
  • Shopping Game: Use play money to buy items and calculate totals or change
  • Art Activity: Draw pictures showing addition (combining) and subtraction (taking away)

Make it a daily routine to spot keywords in real life situations. Consistency with fun activities builds strong foundational skills!