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Setting Up Equations to Solve for Unknowns in Math

Authored by Anthony Clark

English, Mathematics

4th Grade

CCSS covered

Setting Up Equations to Solve for Unknowns in Math
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sarah has 5 apples and buys some more. If she has a total of 12 apples now, how many did she buy? Define the variable for the number of apples bought.

10

3

7

5

Tags

CCSS.6.EE.B.7

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Tom has twice as many marbles as Jerry. If Jerry has x marbles and together they have 30 marbles, how many marbles does each have? Set up an equation to find x.

Jerry has 10 marbles and Tom has 20 marbles.

Jerry has 12 marbles and Tom has 18 marbles.

Jerry has 15 marbles and Tom has 15 marbles.

Jerry has 5 marbles and Tom has 25 marbles.

Tags

CCSS.8.EE.C.8C

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A book costs $15. If you buy y books, how much will you spend in total? Write an equation to represent the total cost.

total_cost = 15 / y

total_cost = 15 + y

total_cost = 15 - y

total_cost = 15 * y

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Lily has 20 stickers. She gives away some stickers to her friends and now has z stickers left. If she gave away 8 stickers, how can you express this situation with an equation?

z = 20 + 8

z = 8 - 20

z = 20 - z

z = 20 - 8

Tags

CCSS.6.EE.B.6

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A box can hold 24 toys. If you have x boxes, how many toys can you store in total? Write an equation to find the total number of toys.

total_toys = 24 - x

total_toys = 12 + x

total_toys = 24 * x

total_toys = x - 24

Tags

CCSS.6.EE.C.9

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a classroom, there are 3 times as many girls as boys. If there are b boys, how can you express the total number of students in the classroom? Set up an equation.

3b

4b

2b

5b

Tags

CCSS.6.EE.C.9

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A farmer has 50 apples and sells some. If he has a left with a total of a apples, how many did he sell? Write an equation to find the number of apples sold.

50 + a

50 / a

50 - a

a - 50

Tags

CCSS.HSA.CED.A.3

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