Forming Equations

Find the value of x.

(a)  

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CCSS.7.EE.B.4A

Find the value of x.

(a)  

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CCSS.HSG.C.A.2

Find the value of x.

(a)  

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CCSS.7.G.B.5

Find the value of x.

(a)  

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CCSS.8.G.A.5

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I think of a number, add 8 and my answer is 13.

Which equation is correct?

• x+8= 13

• 8+13=x

• x+13=8

Tags

CCSS.HSA.CED.A.3

I think of a number, double it, then subtract 5 and my answer is 19

• x2 - 5 = 19

• 2x - 5 = 19

• 2x + 5 = 19

Tilly had £50 to spend. After buying 10 hats, she had £30 left. Create an equation to calculate the price she paid for one hat.