Unit: Addition and Subtraction

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Unit Description

This unit is designed for re-teaching students that are struggling with the computation of addition and subtraction of 4 and 5 digit. It explains the column addition strategy and the trade first method of subtraction. Standards covered: 4.NSO-C.14. Demonstrate an understanding of and the ability to use conventional algorithms for the addition and subtraction of multidigit whole numbers. 4.NSO-C.15. Add and subtract up to five-digit numbers accurately and efficiently.

Lessons

Addition: 4 Digit Column Addition Resources: 3

SWBAT add whole numbers up to 4 digits using column addition.

24
Addition: 5 Digits Resources: 3

SWBAT add whole numbers up to 5 digits using column-addition method.

13
Subtraction: 4 Digits Trade First Resources: 3

SWBAT subtract whole numbers up to 4 digits using trade-first method.

11
Subtraction: 5 Digits Resources: 3

SWBAT subtract whole numbers up to 5 digits using trade-first method.

15
Addition: Decimals Column-Addition Resources: 2

SWBAT add whole numbers with decimals using column addition.

12

Unit Resources

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