Addition & Subtraction Practice (6-8 years)
Solve addition and subtraction word problems with numbers up to 20, developing critical thinking and problem-solving skills.
Materials Needed
- •Printed addition/subtraction worksheet (download below)
- •Pencil with eraser
- •Optional: scratch paper for working out problems
- •Optional: small manipulatives (counters, blocks) for visual support
Duration
20-25 minutes
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Why Word Problems Build Mathematical Reasoning
Word problems require children to translate language into mathematical operations—a critical thinking skill that goes beyond rote calculation. At ages 6-8, children develop the ability to analyze situations, identify relevant information, and choose appropriate operations. Research shows that early exposure to word problems predicts later success in algebra and problem-solving. This activity builds "number sense"—understanding when to add, when to subtract, and how to check if an answer makes sense in context.
- check_circleReading comprehension: Understanding story contexts and extracting key information
- check_circleOperational thinking: Deciding whether to add or subtract based on context
- check_circleMental math strategies: Using counting on, counting back, and known facts
- check_circleProblem-solving: Breaking complex problems into manageable steps
- check_circleReal-world application: Connecting math to everyday situations
Preparation
Print worksheets on white paper. Have scratch paper nearby for working out problems. Sit together in a quiet space. Be prepared to read problems aloud and discuss strategies together.
Instructions
- 1
Read the problem together: "Let's read this word problem carefully. Listen for the important numbers and what we need to find out."
- 2
Identify the question: "What is the problem asking us? How many in all? How many are left? Let's underline the question."
- 3
Find the key numbers: "Circle the important numbers in the problem. We have 12 apples and 7 apples. What do we do with those numbers?"
- 4
Decide: Add or subtract?: "The problem says 'in all'—that means we put the groups together. So we'll add: 12 + 7."
- 5
Solve and check: "12 + 7 = 19. Does that answer make sense? Let's read the problem again and see if 19 apples makes sense."
- 6
Write the answer in a sentence: "There are 19 apples in all. Great job writing a complete answer!"
Assistance for Kids and Parents
- arrow_rightRead it twice: First for understanding, second for details. "Let's read it again and find those key words."
- arrow_rightLook for key words: "In all" usually means add. "Left" or "fewer" usually means subtract.
- arrow_rightDraw a picture: For visual learners, sketching the problem helps: "Draw 12 apples, then draw 7 more. Now count them all!"
- arrow_rightIf they choose the wrong operation: "Let's act it out. You have 15 cookies. You eat 6. Do you have more or less? Less! So we subtract."
- arrow_rightUse mental math strategies: "For 14 - 6, you can count back: 14, 13, 12, 11, 10, 9, 8. Or use known facts: 14 - 4 = 10, then 10 - 2 = 8."
- arrow_rightCelebrate thinking: "Even if the answer is wrong, I'm proud of your thinking! Let's try again together."
Variations & Extensions
Create Your Own Problems
Have them write their own word problems using toys or snacks. "I have 10 toy cars. My friend gives me 5 more. How many do I have?"
Real-Life Math
Turn daily situations into word problems: "We need 20 strawberries. We have 13. How many more do we need to buy?"
Two-Step Problems
For advanced students, introduce two-step problems: "You have 10 cookies. You eat 3, then your friend gives you 5 more. How many now?"