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Arithmetic: Math: Uncharted

Courses MathArithmetic

Arithmetic

Numbers you can trust: decimals, negatives, fractions, ratios, and percent, anchored in receipts, recipes, and price tags.

Math
Unit 1 of 7
22 lessons
177 min
480 XP

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Lessons

22 total

1How Numbers Work HereUse interaction, estimation, and exact calculation as complementary math habits.InteractiveConcept7 min20 XPOpen
2Decimals at the RegisterAdd decimal prices while preserving place value.InteractiveConcept8 min20 XPOpen
3Walk the Number LineInterpret signed changes as movement on a number line.InteractiveConcept8 min20 XPOpen
4The Order of OperationsArrange multiplication and addition steps in a valid evaluation order.InteractiveConcept7 min20 XPOpen
5Everyday Arithmetic WorkoutApply decimal subtraction and operation priority across a varied problem set.InteractivePractice9 min20 XPOpen
6Below ZeroUse negative values to represent temperature and debt.InteractiveConcept8 min20 XPOpen
7Negative Moves WorkoutAdd signed integers in temperature, elevator, and balance contexts.InteractivePractice9 min20 XPOpen
8Estimate Before You SolveSelect a useful estimate before carrying out an exact calculation.InteractiveConcept7 min20 XPOpen
9Repeated MultiplicationInterpret a power as repeated multiplication.InteractiveConcept8 min20 XPOpen
10Operations WorkoutEvaluate mixed operations and signed changes in a sustained problem set.InteractivePractice9 min20 XPOpen
11Numbers Mastery CheckCombine decimal arithmetic, signed changes, operation priority, and estimation.InteractiveMastery check9 min40 XPOpen
12Slices of a WholeRepresent a measured part as a fraction of one whole.InteractiveConcept7 min20 XPOpen
13Same Amount, New NameMatch fractions with equivalent decimal and percent names.InteractiveConcept7 min20 XPOpen
14Lowest Terms WorkoutReduce fractions while preserving their value.InteractivePractice9 min20 XPOpen
15Which Fraction Is BiggerCompare fractions by expressing them with a common denominator.InteractiveConcept8 min20 XPOpen
16A Fraction of an AmountFind a fractional part of a measured quantity.InteractiveConcept7 min20 XPOpen
17Adding FractionsAdd fractions with unlike denominators by creating equal-sized pieces.InteractiveConcept8 min20 XPOpen
18Fraction WorkoutAdd and reduce fractions across a varied problem set.InteractivePractice9 min20 XPOpen
19Ratios in the KitchenScale linked recipe quantities while preserving their ratio.InteractiveConcept8 min20 XPOpen
20Proportional or NotIdentify situations that preserve a constant multiplicative rate.InteractiveConcept8 min20 XPOpen
21Percent Is a FractionUse percent as a fraction of one hundred to calculate a discounted price.InteractiveConcept8 min20 XPOpen
22Fractions Mastery CheckCombine fraction arithmetic, equivalence, proportion, and percent in one problem.InteractiveMastery check9 min40 XPOpen