7th Grade Mid Year Review

7th Grade Mid Year Review

Same signs add

-7 + -3 = -10

8 + 4 = 12

Different signs subtract

keep sign of number with

greater absolute value

-9 + 3 = -6

Changing Subtraction To Addition

1st number stays the same

Change the sign to addition

Change the 2nd Number to its opposite

Multiple Choice

-5 - 2

• -5 + -2

• -5 + 2

• 5 + -2

• 5 + 2

Multiple Choice

5 - 8

• 5 + -8

• 5 + 8

• -5 + -8

• -5 + 8

Multiple Choice

-5 - (-6)

• -5 + -6

• -5 + 6

• 5 + -6

• 5 + 6

Multiplying Integers

Same signs positive

different signe negative

Multiple Choice

-9 × 9

• 18

• -18

• 81

• -81

Multiple Choice

-9 × -4

• 32

• -32

• 36

• -36

Multiple Choice

-8 × -4

• 12

• -12

• 32

• -32

Multiple Choice

50 ÷ -2

• 20

• -20

• 25

• -25

Inequality

Multiple Choice

Greater Than

• >

• <

• ≥

• ≤

Multiple Choice

Less than or Equal to

• >

• <

• ≥

• ≤

Multiple Choice

Less than

• >

• <

• ≥

• ≤

Multiple Choice

Greater than or equal to 42

• > 42

• < 42

• ≥ 42

• ≤ 42

Formulas

Multiple Choice

Area of circle

• A = π × d

• A = πr²

• A = ½bh

• A = bh

• A = lw

Multiple Choice

Circumference

• C = πd

• C = πr²

• C = bh

• C = ½bh

• C = lw

Multiple Choice

Area of Triangle

• A = πd

• A = πr²

• A = ½bh

• A = bh

• A = lw

Multiple Choice

Area of Parallelogram

• A = πd

• A = πr²

• A = ½bh

• A = bh

• A = lw

Multiple Choice

 $A=\frac{a+b}{2}h$  

• Circle

• Triangle

• Trapazoid 

• Rhombus 

Area of Circles

A=πr²

Multiple Choice

Area of a circle with a radius of 5

• 15.7

• 78.5

• 157

• 314

Multiple Choice

Area of a circle with a radius of 10

• 15.7

• 78.5

• 31.4

• 314

Area of Triangles

A=½bh

Cricumference of A Circle

C=πd or C=2πr