Here are some examples of addition and subtraction word problems. The videos will illustrate how to use the block diagrams (Singapore Math) method to solve word problems. Go to Math Word Problems for more examples.
How to solve addition and subtraction word problems?
1. Read the entire problem.
2. Decide who is involved in the problem
3. Decide what is involved in the problem
4. Draw unit bars of equal length
5. Read each sentence one at a time
6. Put in question mark in place
7. Work computation to the side or underneath
8. Answer the question in a complete sentence
Addition Model Drawing
Example: Alicia had $6 more than Bobby. If Bobby has $10, how much did they have altogether?
Singapore Math Addition
(1) Sydney has 7 Sponge Bob stickers. She also has 8 scratch-and-sniff stickers. How many stickers does Sydney have altogether?
(2) Micah had 4 more Halloween treats than Katelyn. If Katelyn had 12 treats, how many did they have altogether?
Model: Addition and Subtraction
(1) Sara received 73 votes in the school election. Ben received 25 fewer votes than Sara. How many students voted?
First: Find how many students voted for Ben.
Next: Find the total number of votes.
(2) What if there were 3 students in another election and the total number of voted was the same? What would the bar model for the total number of votes look like? How many votes might each student get?
Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.
You can use the free Mathway widget below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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