Mathematics 5
N5.7
Demonstrate an understanding of addition and subtraction of decimals (limited to thousandths).
[C, CN, PS, R, V]
Indicators for this outcome
| (a) |
Identify and describe situations relevant to one's life, family, or community experiences in which sums and differences of decimals might be determined. |
| (b) |
Use personal strategies to predict sums and differences of decimals and evaluate the effectiveness of the strategies. |
| (c) |
Create concrete or pictorial models to represent the determination of the sum or difference of two decimal numbers, explain the model, and record the process symbolically. |
| (d) |
Explain how estimation can be used to determine the position of the decimal point in a sum or difference. |
| (e) |
Identify and correct errors in the calculation of sums and differences of decimals and explain the reasoning. |
| (f) |
Explain how understanding place value is necessary in calculating sums and differences of decimals. |
| (g) |
Solve a given problem that involves addition and subtraction of decimals and explain the strategies used. |
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