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Predicting counts from a percent worksheets

Thirty percent of 200 spins is 60 of them. These free printable worksheets turn a percent into a predicted count — the everyday use of a probability written as a percent — with whole-number answers.

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Predicting counts from a percent
Predicting counts from a percent worksheet — Whole-number counts, free printable with answer key

The answer key prints on a separate page.

What's on this sheet

A percent is a probability out of a hundred, so predicting a count from it is the same move as from a fraction with the whole named for you: 30% is 30 in every 100, and 30% of 200 is two hundred split into 100s with 30 taken from each — 60. Meeting the idea as a percent and as a fraction is the point; 3/10 and 30% are one rate said two ways, and a child should be fluent turning either into a count.

Why this sheet works

Every trial count is chosen so the answer is whole — no sheet asks for 62.5 of anything — so this, like its fraction twin, is a probability skill that marks on screen as well as on paper. The reliable way in is to turn the percent into “so many per hundred” before multiplying, rather than reaching for a decimal a seventh-grader may still be shaky on.

How this one works

P(red) = 75%. In 300 spins, how many land on red?

300÷4=75
3×75=225
  1. 75% is 75 out of every 100, which is 3 out of every 4 after dividing both by 25. So split the 300 into groups of 4: 300 ÷ 4 = 75.
  2. Each group of 4 gives 3 of them, and there are 75 groups: 3 × 75 = 225.

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