Addition and Subtraction Strategies Rubric Term 3 2021 Name:
Criteria | Level 2 (5ii) | Early Level 3 | Level 3 | Level 4 |
Addition and Subtraction strategies | Simple strategies to add and subtract smaller numbers. | Knowing a range of strategies e.g. use of an algorithm, or partitioning. | Applying a range of appropriate strategies for different problems. Number lines, compensation, | Have a range of strategies that can be used for decimal numbers and fractions |
My goal was to be able to use my strategies on fractions activities.I was hoping to improve on my goal and I have. I really like that there are many strategies that are easy to use. I just think that we have to work on percentages because doing questions with them in it is very hard.
Anais
Goal | Success Criteria (This is what it will look like when I get there) |
I need to be able to break numbers up to make it easier to subtract.
| To achieve this goal I can break up single digit numbers to add or subtract. Eg 47 + 8 means 47 (+ 3 + 5) = 47 + 3 = 50 + 5 = 55 or in 43 - 6 the 6 would be partitioned into a 3 and a 3. 43 - 3 = 40 - 3 = 37. |
I need a range of strategies to be able to use to add and subtract when solving different problems | To achieve this goal I can use different strategies. I can use number lines to count on and count on back, rounding skills to compensate as well as an algorithm. I must be able to partition well so I can bridge through tidy numbers. |
I need to be able to select the strategies to use to add and subtract when solving different problems |
To achieve this goal I will have a range of different strategies I can use. I can look at numbers in a maths problem and say this strategy will be best here because ……… I need to be able to justify and explain. I begin to check my answers. |
I need to be able to extend my use of addition and subtraction strategies to decimal numbers, fractions, and percentages. | To achieve this goal I will be able to solve math problems that involve decimal numbers, fractions. I will use self checks and inverse to help my accuracy
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