Addition up for kids to 1000000

Subtraction for kids up to 1000000

Comparing numbers up to 1000000

Compare two numbers up to 1000000

Compare two differences up to 1000000

Ascending order of three numbers up to 1000000

Descending order of three numbers up to 1000000

Multiplication for kids up to 100

Multiplication by 10, 100 and 1000

Multiplication of two- or three-digit numbers with one-digit numbers

Multiplication of two-digit numbers

Dividing numbers smaller than 10,000

Problem. The sum of three consecutive natural numbers

Problem. Find a three digit number.

Problem. Find a four digit number

Problem. Equal number of candies.

Problem 1. I'm thinking of a number.

By learning math, you learn to think.