Mrs.D Math · 6th Grade

PROP
STAR

Solving Percent Problems · Proportions
🧩 Part
🎯 Whole
💯 Percent
🧩 n40 = 80100
🎯 15n = 75100
💯 520 = n100
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📚 Percent Proportions

The One Proportion That Solves Everything

partwhole = %100

Fill in the two numbers you know, put n where the missing number goes, then cross multiply and divide.

1
Find the percent: 5 is what percent of 20?
5/20 = n/100 → 20 × n = 5 × 100 → n = 500 ÷ 20 = 25%
2
Find the whole: 75% of what number is 15?
15/n = 75/100 → 75 × n = 15 × 100 → n = 1500 ÷ 75 = 20
3
Find the part: What number is 80% of 40?
n/40 = 80/100 → 100 × n = 80 × 40 → n = 3200 ÷ 100 = 32

Where Does Each Number Go?

✓
The number next to "of" is usually the whole (bottom of the fraction).
✓
The number next to "is" is usually the part (top of the fraction).
✓
The number with the % sign always goes over 100.

How to Play

🧩
Finding Part — "What number is 80% of 40?"
🎯
Finding Whole — "75% of what number is 15?"
💯
Finding Percent — "5 is what percent of 20?"
🌟
Mixed — All three types together for the ultimate challenge!
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FINDING PART
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