Challenges · Examples

Solve Examples

Unlock challenges step by step. Every solved example adds XP to your career.

0 / 298 solved

268 results

#1 · Arithmetic

Two-digit addition

Available
D1/105XP

#3 · Arithmetic

Times table

Locked
D1/105XP

#5 · Arithmetic

Two-step calculation

Locked
D2/1020XP

#6 · Fractions

Simplify the fraction

Locked
D2/1020XP

#7 · Equations

Basic equation

Locked
D2/1020XP

#8 · Geometry

Rectangle area

Locked
D2/1020XP

#9 · Geometry

Square perimeter

Locked
D2/1020XP

#10 · Fractions

Fraction addition

Locked
D2/1020XP

#11 · Logic

Logic: days of the week

Locked
D2/1020XP

#12 · Logic

Snail in the well

Locked
D2/1020XP

#13 · Fractions

Three pizzas, four people

Locked
D2/1020XP

#14 · Equations

Shifted equation

Locked
D2/1020XP

#15 · Geometry

Triangle third angle

Locked
D2/1020XP

#16 · Combinatorics

Handshakes

Locked
D2/1020XP

#17 · Arithmetic

Reverse percentage

Locked
D2/1020XP

#18 · Fractions

Two thirds

Locked
D2/1020XP

#20 · Geometry

Missing side

Locked
D2/1020XP

#21 · Logic

Sequence 2, 6, 12, 20…

Locked
D2/1020XP

#22 · Arithmetic

Sum to twenty

Locked
D2/1020XP

#23 · Combinatorics

Arrangements of MAT

Locked
D2/1020XP

#24 · Probability

Even number on a die

Locked
D2/1020XP

#25 · Algebra

Square root

Locked
D2/1020XP

#26 · Fractions

Fraction difference

Locked
D2/1020XP

#27 · Geometry

Cube volume

Locked
D2/1020XP

#29 · Logic

Day in 100 days

Locked
D2/1020XP

#31 · Arithmetic

Least common multiple

Locked
D2/1020XP

#32 · Arithmetic

Greatest common divisor

Locked
D2/1020XP

#33 · Combinatorics

Choosing two books

Locked
D2/1020XP

#34 · Probability

Two coins – both heads

Locked
D2/1020XP

#35 · Geometry

Pentagon angle sum

Locked
D2/1020XP

#37 · Fractions

Decimal to fraction

Locked
D2/1020XP

#39 · Logic

Four daughters

Locked
D2/1020XP

#40 · Equations

Two consecutive numbers

Locked
D2/1020XP

#41 · Geometry

Hypotenuse of 6 and 8

Locked
D2/1020XP

#43 · Combinatorics

Three-digit from 1, 2, 3

Locked
D2/1020XP

#44 · Probability

Red marble

Locked
D2/1020XP

#46 · Fractions

Sum of three fractions

Locked
D2/1020XP

#47 · Geometry

Side from a square

Locked
D2/1020XP

#49 · Logic

Gauss's sum

Locked
D2/1020XP

#51 · Combinatorics

Seating four

Locked
D2/1020XP

#52 · Algebra

Quadratic equation I

Locked
D2/1020XP

#53 · Arithmetic

Primes below 20

Locked
D2/1020XP

#54 · Geometry

Area of a circle

Locked
D2/1020XP

#55 · Functions

Function value

Locked
D2/1020XP

#56 · Probability

Sum of seven

Locked
D2/1020XP

#57 · Combinatorics

Number of subsets

Locked
D2/1020XP

#59 · Equations

Exponent of two

Locked
D2/1020XP

#60 · Arithmetic

Digit sum

Locked
D2/1020XP