Grade 3 - Number
Standard 3.N.9 - Complete the addition sentence by filling in the missing number with sums up to 1000.
Included Skills: Addition
Demonstrate an understanding of addition and subtraction of numbers with answers to 1000 (limited to 1, 2 and 3-digit numerals) by: • using personal strategies for adding and subtracting with and without the support of manipulatives • creating and solving problems in contexts that involve addition and subtraction of numbers concretely, pictorially and symbolically. • Achievement Indicators • Students who have achieved this outcome(s) should be able to: - Model the addition of two or more given numbers using concrete or visual representations and record the process symbolically. - Model the subtraction of two given numbers using concrete or visual representations and record the process symbolically. - Create an addition or subtraction story problem for a given solution. - Determine the sum of two given numbers using a personal strategy, e.g., for 326 + 48, record 300 + 60 + 14. - Determine the difference of two given numbers using a personal strategy, e.g., for 127 – 38, record 38 + 2 + 80 + 7 or 127 – 20 – 10 – 8. - Solve a given problem involving the sum or difference of two given numbers.