Basic Foundations Math

When you multiply a positive number by a negative number, what should my answer be?

• Always negative

• Always positive

• Sometimes positive

• Sometimes negative

When you multiply a negative number by a negative number my answer is?

• Always negative

• Never positive

• Always positive

• Sometimes negative

Multiply

-27 x 3?

• 61

• 81

• -81

• -61

Multiply

-300 x -20

• -6000

• 600

• -600

• 6000

When multiplying or dividing by a negative number, what happens to the inequality

i.e < , >,

• It flips

• Stays the same

Solve for x

3x > 27

• x < -9

• x > -51

• x > 9

• x < 51

Solve for x

-4x < 16

• x < -4

• x > 4

• x < -4

• x > -4

If the diameter of a circle is 16, what is the radius?

• r = 8

• r = 16

• r = -8

• r = 16

If the radius equals 9 what is r² ?

• 3.14

• 18

• π

• 81

When adding or subtracting intergers, if the signs are the same what should you do?

• Subtract the smaller number from the larger number and change the sign

• Add both numbers and keep the sign

• Subtract the smaller number from the larger number and keep the sign

• Add both numbers and change the sign