Math

Explore numbers to one million, place values, addition, and subtraction. Then learn about lines and angles through geometry.

Start with the first lesson or choose a topic you want to review.

1. 01

   Numbers to 1,000: reading and writing

   Build a number from hundreds, tens, and ones, and discover why zero matters.

   12 min to read and practice
2. 02

   Comparing and ordering to 1,000

   Use <, >, and =, and find the number immediately before or after another.

   12 min to read and practice
3. 03

   Reading numbers to one million

   Move from thousands to a million and read large numbers in smaller groups.

   12 min to read and practice
4. 04

   Place values and number groups

   Find each digit’s value, expand a number, and build it again.

   12 min to read and practice
5. 05

   Comparing numbers to one million

   Order large numbers without guessing and cross number-group boundaries carefully.

   12 min to read and practice
6. 06

   Number lines to one million

   Find the step size and read points between labelled numbers.

   12 min to read and practice
7. 07

   Addition to 1,000, step by step

   Add by place value and explain regrouping ten ones or tens.

   12 min to read and practice
8. 08

   Subtraction to 1,000 and regrouping

   Subtract by place value and learn what to do when you meet a zero.

   12 min to read and practice
9. 09

   Addition and subtraction: checks and missing numbers

   Use the inverse operation to check a result and find a missing number.

   12 min to read and practice
10. 10

    Mental addition to one million

    Split numbers, combine matching place values, and use nearby round numbers.

    12 min to read and practice
11. 11

    Mental subtraction to one million

    Subtract in steps, cross zero boundaries, and check by adding.

    12 min to read and practice
12. 12

    Lines, rays, and line segments

    Three similar drawings with different rules about beginnings and ends.

    6 min to read and practice
13. 13

    Parallel and perpendicular lines

    Look at the direction of the lines and the angle where they meet.

    6 min to read and practice
14. 14

    Angles: vertex, arms, and types

    Imagine two pencils touching at one end. Look at the opening between them.

    6 min to read and practice
15. 15

    Draw parallel lines

    Use a ruler and a set square. Align, slide, then draw.

    8 min to read and practice