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Standard 4.N.3 - Complete the addition sentence by filling in the missing number with sums up to 1000.

Included Skills:

Demonstrate an understanding of addition of 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 numbers, limited to 3- and 4-digit numerals.
Explain how to keep track of digits that have the same place value when subtracting numbers, limited to 3- and 4-digit numerals.
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.
Refine personal strategies to increase their efficiency.
Solve problems that involve addition and subtraction of more than 2 numbers.