Full preview — nothing is watermarked or held back.
Math · 7th Grade
Tax, Tip and Discount
Three names for the same multiplication.
How to use it
One multiplication, not two steps. It is faster and there is less to get wrong.
Free · print-ready PDF · US Letter and A4
- Grade
- 7th Grade
- Ages
- 12–13
- Subject
- Math
- Pages
- 1
The rest of the 7th Grade wall
49 more posters, all free to print — 11 of them here.
Solving ProportionsTwo equal ratios, and the cross-multiplication that solves them.Constant of ProportionalityThe single number that turns one quantity into the other, every time.Percent Increase and DecreaseChange over original — and why the original is always the bottom.Operations with Rational NumbersNegative fractions and decimals — convert to one form, then apply the sign rule.Two-Step EquationsUndo in reverse order: plus and minus first, then times and divide.Variables on Both SidesCollect the letters on one side and the numbers on the other.Circumference of a CircleThe distance around, and the two formulas that are the same formula.Area of a CircleSquare the radius, never the diameter.Angle PairsFive relationships that let you find a missing angle without measuring.ProbabilityA number between 0 and 1 — and what it does and does not promise.Probability of Two EventsMultiply for 'and', add for 'or' — once you have checked they cannot overlap.