Arithmetic
Problems related to basic calculations, fractions, decimals, etc.
Problems in this category
The problem states that a bathroom scale reads a person's mass as 65 kg with a 3 percent uncertainty...
PercentageUncertaintyApproximationUnits Conversion
2025/3/14
We are given several elapsed time problems. We need to calculate the end time based on the start tim...
Time CalculationElapsed TimeAddition
2025/3/14
Arthur and Bryony wrote essays. Arthur worked for 65 minutes, writing an average of 16 words per min...
Word ProblemsMultiplicationSubtractionComparison
2025/3/14
Layla downloads a film of size 1440 MB with an internet speed of 1.6 MB per second. The download sta...
RateTimeUnit ConversionWord Problem
2025/3/14
Amy recorded the number of people who visited her website. 1400 people visited by 13:15 and 13000 pe...
RateWord ProblemSubtractionDivisionTime Calculation
2025/3/14
The problem states that a worker bee has a mass of $1 \cdot 10^{-4}$ kg. There are $4 \cdot 10^4$ wo...
Scientific NotationExponentsMultiplicationUnits Conversion
2025/3/14
The problem asks us to find the total number of copies sold by a boy band for two albums. The first ...
Scientific NotationAdditionExponents
2025/3/14
The problem requires calculating the sum of the given numbers, some of which are positive and some a...
AdditionSubtractionSigned Numbers
2025/3/14
We need to evaluate the expression $\frac{9\pi}{10} \times 133.94$.
Arithmetic OperationsMultiplicationApproximationDecimal NumbersPi
2025/3/13
Nathan begins his homework at 3:10 PM. He works for 2 hours and 30 minutes. The problem asks for the...
Time CalculationAddition
2025/3/13