The Runners’ Relationships

Write a word problem that uses percents and can be solved by the number sentence 0.25 x ____ = 140.10.

Hot! Hot! Hot?

Darron’s calculator is broken.  It doesn’t always put the decimal point in the right place.  So he has difficulty deciding if an answer is correct.  He multiplied 43.7892 x 2.01605.  His calculator showed a product of 8.8281216.  Do you agree?… Continue Reading →

Sibling Probabilities

There is only one even prime number, 2.  How can you explain that?

Lucky Count

Adding Fractions

Kenyatta asked, “Why do fractions have to have common denominators before they can be added?”  What do you think?  Support your answer with specific examples.

Planetary Play

Jennifer and Patty are arguing about what a rational number is.  Describe, using examples, what you think it is.

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