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Which situation can be represented by the equation x + 6 = 13?

• Two friends played 13 games of chess. One friend won 6 games. What is x, the number of games the other friend won?

• Zoltan spent $13 on a shirt and $6 on sunglasses. What is x, the total amount that he spent?

• Ryder has 13 herb plants and 6 tomato plants in his garden. What is x, the total number of plants in Ryder's garden?

• Dorina ran 6 laps around the track at practice on Tuesday. On Thursday, she ran 13 laps. What is x, the total number of laps that Dorina ran?

Which equation can be represented by the equation x + 7 = 12?

• Ryder has 12 plants in his garden. This includes 7 tomato plants. What is x, the number of plants in Ryder's garden that are not tomato plants?

• Zoltan spent $12 on a shirt and $7 on sunglasses. What is x, the total amount that he spent?

• Two friends are playing chess. One friend won 7 games and the other won 12. What is x, the total number of games played?

• Dorina ran 7 laps around the track at practice on Tuesday. On Thursday, she ran 12 laps. What is x, the total number of laps that Dorina ran?

Which situation can be represented by the equation x + 8 = 14?

• During two days of practice, Dorina ran a total of 14 laps around the track. One day she ran 8 laps. What is x, the number of laps that Dorina ran on the second day?

• Zoltan spent $14 on a shirt and $8 on sunglasses. What is x, the total amount that he spent?

• Ryder has 14 herb plants and 8 tomato plants in his garden. What is x, the total number of plants in Ryder's garden?

• Two friends are playing chess. One friend won 8 games and the other won 14. What is x, the total number of games played?

Bob had $90 before he went shopping. He now has $37. What equation could represent the amount of money Bob spent?

• X - 90 = 37

• 90 - X = 37

• 90 + 37 = X

• 37 - X = 90

The temperature outside is 35 degrees. The temperature outside is 37 degrees less than the temperature inside. What equation would help find the inside temperature?

• X - 37 = 35

• 37 - 35 = X

• 35 - 37 = X

• X + 37 + 35 = X

Together Brissa and Tania have 12 cats. If Brissa has 3, write an equation to find out how many cats Tania has.

• 12 - 3
• 12 = x - 3
• x + 3 = 12
• x = 9

Erica is 4 years old. This is 12 years younger than her sister Jessica. Write an equation to find Erica's age.

• 12 + 4
• 12 - x = 4
• x - 12 = 4
• x + 12 = 4

In the equation X - 8 = 5 , 8 is being subtracted from the variable, X. How should you show your work to isolate the variable and solve the equation?

• Subtract 8 from both sides. The solution is X = -3.

• Add 8 to both sides. The solution is X = 13.

• Subtract 8 from both sides. The solution is X = 3.

• Add 8 to both sides. The solution is X = 14.

What is the inverse operation of subtraction?

• Addition

• multiplication

• division

What is the inverse operation of addition?

• Subtraction

• multiplication

• division