Cross Products

What is the correct next step when using the cross product method on this problem?

 $\frac{1}{2}=\ \frac{5}{10}$  

• 1(10) = 2(5)

• 1(5) = 2(10)

• 1(2) = 5(10)

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Cross Products of a proportion are _________ equal.

• ALWAYS

• SOMETIMES

• RARELY

• NEVER

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Solve the proportion for X.

 $\frac{36}{9}=\frac{x}{3}$  

• 2

• 4

• 13

• 12

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Is the following equation a Proportion or NOT? (Proportions have two equivalent ratios)

 $\frac{4}{7}=\frac{2}{4}$  

• Proportion

• Not a proportion

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Solve this proportion for X.

 $\frac{12}{x}=\frac{48}{4}$  

• x = 3

• x = 1

• x = 12

• x = 48

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Is the following equation a proportion or not? (Proportions have two equivalent ratios)

 $\frac{2}{3}=\frac{4}{6}$  

• Proportion

• Not a proportion

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

What is a proportion?

• An equation with two equivalent ratios separated by an equal sign

• A straight line that goes through the origin

• The constant of proportionality

Tags

CCSS.7.RP.A.1

CCSS.7.RP.A.2

CCSS.7.RP.A.3

True or False: This equation is a proportion because it has two equivalent ratios separated by an equal sign.

 $\frac{7}{21}=\frac{21}{63}$  

• True

• False

Tags

CCSS.7.RP.A.2

True or False: A proportion is the SAME EXACT thing as an equation.

• True, proportions and equations both have equal signs, therefore they are the same exact thing.

• False, a proportion is a BRANCH of 'equation'- it is a TYPE of equation, not the same thing.

Tags

CCSS.7.RP.A.2

Miss B's Favorite Pop Tart Flavor is...

• Cookies & Cream

• Strawberry

• Brown Sugar

• Cinnamon