Mathematical Expressions and Formulas/ Addition and Subtraction

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CCSS.6.G.A.1

a+a+a=

• 3a

• -2a

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CCSS.7.EE.A.1

• -2x

• 8x

• 2x

• -8x

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CCSS.7.EE.A.1

Which of the following pairs of terms are like terms?

• 3a , 8a

• 7x , 7

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CCSS.6.EE.A.2B

If a = 2b and b = 15, then the numerical 0 value of the expression: a + 2b + 5 equals

• 60

• 65

• 30

• 40

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CCSS.6.EE.A.2C

What is the inequality expressing that the suitable height (n) cm of a person should not be less than 180 cm to join one of the sports ?

What is the suitable equation to find the side length of an equilateral triangle whose perimeter is 12 cm?

• x+3=12

• 3x=12

• 2x=12

• x=12

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CCSS.3.MD.D.8

Double the number X added to 5 is equal to 1

• 2x+5=1

• 5-2x=1

• 2x=1

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CCSS.7.EE.B.4A

The grade X that a student must obtain to pass the test is at least 18.

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CCSS.6.EE.B.8

Samer saved X banknotes of 10 LE and y banknotes of 20 LE, then spent 8 LE.

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CCSS.6.EE.B.6