Grade 5 - Number
Standard 5.N.7 - Solve addition and subtraction inequalities with decimals.
Included Skills: Number Properties, Decimals, Mixed Equations
Demonstrate an understanding of addition and subtraction of decimals (limited to thousandths). • Identify and describe situations relevant to one's life, family, or community experiences in which sums and differences of decimals might be determined. • Use personal strategies to predict sums and differences of decimals and evaluate the effectiveness of the strategies. • 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. • Explain how estimation can be used to determine the position of the decimal point in a sum or difference. • Identify and correct errors in the calculation of sums and differences of decimals and explain the reasoning. • Explain how understanding place value is necessary in calculating sums and differences of decimals. • Solve a given problem that involves addition and subtraction of decimals and explain the strategies used.