Matt says he can find the sum of 45+50 without rewriting it. Explain how you can solve this problem using mental math.

An object that weighs 1 pound on earth weighs only 0.17 pounds on the moon. Zach's dog weighs 17 1/2 pounds on earth. How much more does his dog weigh on earth than on the moon?

A bag contains 10 red stars and 7 blue stars. John randomly draws 4 stars from the bag. He does not replace the stars after each draw. What is the probability that he draws 1 red star and 3 blue stars?

What is 0.16326530612 as a fraction

If Paul is 5 years old and Mei is 2 years old, how old will Mei be when Paul is 15? Enter your answer in the box.

If a and b are distinct positive integers. the units digit of a2 is equal to the units digit of a, and the units digit of b2 is equal to the units digit of b.

How many rectangular faces does a pentagonal pyramid have?

The two leading digits of each 6-digit number add up to 23. Which digit could be in the ones place if the 4-digit number is divisible by 6.

The weight of an object on a particular scale 155. 2lbs the measured weight May very from the actual weight by the most 0.4 lbs what is the actual weight of the objects

Circumferenceif a circle is 62.8inches, whats is the radius

What is a letter or symbol that represents some unknown value