Papa Bear ate 1/2 of a pie. Mama Benr ate 1/2 of what was left Baby Bear ate 1/2 of what was left after Mama Bear finished.
3) What fractional part of the pie did Mama Bear eat?
4) What fractional part of the pie was left for Goldilocks?

1st part Papa - 1/2

2nd part Mama - 1/2 * 1/2 = 1/4

3rd part Baby - 1/4 * 1/2 = 1/8

4th part Mama = 1 - 1/2 - 1/4 - 1/8 = 1 - 4/8 - 2/8 - 1/8 = 1/8

What fractional part of the pie did Mama Bear eat?

1/4 + 1/8 = 3/8

What fractional part of the pie was left for Goldilocks?

0

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use mnemonics and other tricks.

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note: the best i know.

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step-by-step explanation: lol