Exploring problems involving addition and subtraction
Exploring problems involving addition and subtraction
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Lesson details
Key learning points
- In this lesson, we will problem solve to complete missing number triangles! We will practice adding and subtracting to find the answers.
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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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3 Questions
Q1.
This part whole model can be expressed as 7 - 3 = 4. Choose the other subtraction equation that can be written from this part whole model.
7 - 0 = 7
7 - 1 = 6
Q2.
There are five elves standing up, and two elves sitting down. Altogether, there are seven elves. This can be written as an equation: 5 + 2 = 7. How else can this equation be written?
1 + 6 = 7
7 = 3 + 4
Q3.
This part whole model can be expressed as 1 + 6 = 7. Choose the other addition equation that can be written from this part whole model.
2 + 5 = 7
3 + 4 = 7