Mental maths

What is the cube root of 8?

10% of $40 = -------------

Solve the simultaneous equations

x+y=5

x-y=1

Which of these expressions has the greatest value?

• -3 - -6
• -3 x -6
• -3 + -6
• -3 ÷ -6

George has 1/3 pan of brownies. He eats 1/4 of them. What fraction did George eat?

• 1/7
• 1/4
• 1/3
• 1/12

Figure the 20% tip:  
Bill totals $23.00

• $2.30
• $2.00
• $4.00
• $4.60

A student earned an 80% on a math test that had 20 problems.  How many problems on the test did the student answer correctly?

• 20
• 4
• 16
• 12

What should b added to XY to get -XY ?

• 400

• 40

• 800

• 80

What is the exponential equivalent to:

6 x 6 x 6 x 6 x 6 = ?

• 6 x 5

• 6 * 4

• 6⁵

• 5⁶