Grade 4 - Number
Standard 4.N.2 - Practice estimating addition word problems by first rounding the numbers then adding them together.
Included Skills: Estimation
Demonstrate an understanding of addition of whole numbers with answers to 10 000 and their corresponding subtractions (limited to 3 and 4- digit numerals) by: using personal strategies for adding and subtracting, estimating sums and differences, solving problems involving addition and subtraction. • Explain how to keep track of digits that have the same place value when adding or subtracting numbers. • Describe a situation in which an estimate rather than an exact answer is sufficient. • Estimate sums and differences using different strategies (e.g., front-end estimation and compensation). • Explain the strategies used to determine a sum or difference. • Solve problems that involve addition and subtraction of more than two numbers.