4.3 Math Probe

What rule does the following number sequence follow?

5, 10, 15, 20, 25

• A. Add 10.

• Multiply by 2.

• Add 5.

Which number is prime?

• 18

• 14

• 11

21 is 3 times as many as 7.

Which equation represents this?

• 21 = 3 × 7

• 10 = 3 + 7

• 21 ÷ 3 = 7

500 - 127

• 473

• 373

• 483

652 + _____ = 600 + 152

• 100

• 752

• 1404

78,000 − _______ = 77,986

• 13

• 1124

• 14

2 /10 = ? /100

• 2

• 20

• 200

______ < 3.30

• 4.0

• 3.40

• 3.0

If a penny = .01 or 1/100 and a nickel = .05 How would your write the nickel value in a fraction?

• 50/100

• 5/100

• 50/150

Zoey is having a party for 10 friends. If each friend eats 1/ 2 pound of chips, how many pounds of chips will Zoey need?

• 6 pounds

• 4 pounds

• 5 pounds