Panda Math by Ann Whitehead Nagda

Author:Ann Whitehead Nagda
Language: eng
Format: epub
ISBN: 9781466867246
Publisher: Henry Holt and Co. (BYR)

POO’S CLUES

MEI SHENG MUNCHES SOME BAMBOO.

Bai Yun’s keepers weigh her poop each day to see how much of the nutrition in the bamboo she’s eaten has been absorbed. Twice a day they collect her poop to weigh it. They might find 24 piles of panda poop overnight but only 7 piles during the day.

To find out how much more she poops at night, subtract 7 from 24. One way to do this is to change the numbers so the subtraction problem is easier. The number 10 is a friendly number. To get 10, add 3 to 7. But you must also add 3 to 24. When you add the same amount to both numbers, the difference between them stays the same.

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