Mathletes Fab FiveFollow the instructions on the Fab

Five sheet for Monday!

Applying Addition and Subtraction of

Integers

Lesson 1.4

We are going to simplify problems that have both addition and subtraction

Introduction

Like this one:-2 + 5 – 8 – (-4)

Notice:•The addition stays the same•The subtraction needs to be turned into addition using KFC

• Underline the numbers that can stay the same.

• Circle the numbers that need to be changed. Remember to include the subtraction sign.

• KFC the circled numbers.• Add all positive integers.• Add all negative integers.• Lastly, add integers.

Strategy

Examples:

A) -2 + 5 – 8 – (-4)K F C F C

-2 + 5 + (-8) + 4

9 + (-10)

-1

Examples:

B) 5 – 8 – 9 + 4 – (-7)K F C F C5+ (-8) + 4

16 + (-17)

-1

F C+ (-9) + 7

54

+716

Examples:

C) -7 – 3 – (-8) + 5 + 6 – 9K F C F C

-7 + (-3) + 5

19 + (-19)

0

F C+ 8 + 6

85

+619

+ (-9)

73

+9-19

Examples:

D) 8 – 9 – (-11) – 4 + 6 – 1 + 6K F C F C8 + (-9) + (-4)

31 + (-14)

17

F C+ 11 + 6

8

6+631

+ (-1)

94

+1-14

F C+ 6

11

Homework

• Lesson 1.4 Worksheet