7th Math Unit 2 Day 7 - 1/8

Evaluate--Use number lines to calculate, then write either an addition or subtraction equation that matches the number line.

a) 9\frac{1}{2}+(-2\frac{1}{2})

CFS:

#1: Accurately rewrites expression when appropriate

#2: Accurately represents on the number line

Evaluate--Use number lines to calculate, then write either an addition or subtraction equation that matches the number line.

b) -8+5\frac{1}{2}

CFS:

#1: Accurately rewrites expression when appropriate

#2: Accurately represents on the number line

Evaluate--Use number lines to calculate, then write either an addition or subtraction equation that matches the number line.

c) -1\frac{1}{2}-(-6\frac{1}{2})

CFS:

#1: Accurately rewrites expression when appropriate

#2: Accurately represents on the number line

Evaluate--Use number lines to calculate, then write either an addition or subtraction equation that matches the number line.

d) -3\frac{1}{4}-1\frac{3}{4}

CFS:

#1: Accurately rewrites expression when appropriate

#2: Accurately represents on the number line

Use an addition equation and a number line to evaluate the expressions.

a. − 0. 75 + 4

Use an addition equation and a number line to evaluate the expressions.

b. 7 − (− 0. 9)

Use an addition equation and a number line to evaluate the expressions.

Use an addition equation and a number line to evaluate the expressions.

Borrowing--Alex gets paid $5 for doing chores around the house. He then owes his friend $7\frac{1}{4} for his order from 5 Guys.

What is the overall change to Alex's money?

CFS:

#1: Accurately rewrites expression when appropriate

#2: Accurately represents on the number line

SPICY--Try if you have time.

Represent the expression on a number line to find the answer as a single number.

\frac{1}{2}-(-4\frac{1}{2})-2\frac{1}{4}

Drought--Ishmael plans to go fishing in his favorite pond. After one week, the water level drops 2 inches. After a second week, the water level dropped an additional 1\frac{1}{3} inches. Assume that 0 is the original water level.

Model the changes to the pond's water level after both weeks on the number line, then write an addition or subtraction equation.

CFS:

#1: Accurately rewrites expression when appropriate

#2: Accurately represents on the number line