Lesson 1: Numbers up to 1000
Here is a PDF version of the lesson.
Here is a PDF version of the workbook containing lots of practice.
We use numbers everyday to count, to measure, to estimate and so on.
Natural Numbers are positive numbers from 0 on that we use to count.
0, 3, 6, 10, 204, 1000…
We can do various operations with natural numbers: order, compare, add, subtract, multiply and divide them.
In this lesson you will learn how to add and subtract natural numbers up to 1000 by breaking the numbers down based on their place value.
For example, 345 could be represented as a sum of 300 + 40 + 5. When adding it to another similar number, it often makes sense to add the components separately.
Place value of digits within a number is important when doing operations with natural numbers, as corresponding digits need to be added/subtracted respectively.