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Small-group support

A percent selects a part of a whole.

25 of 100

Noor looks at 80 stickers at the school store. The task is to find 25% of that whole.

A percent is a ratio to 100. Finding a percent of a number scales that ratio to a new whole. Subtracting the percent from the whole treats a rate as if it were already an amount.

Problem 1 of 4. A short entry task, a model, guided examples, then a new independent try. Frames are optional.

25 of 100

What is 25% of 80 stickers at the school store?

Support frame: 1% of 80 = 0.8. Then × 25.

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