To multiply by 1,000, each digit moves three places to the left. Eg, units become thousands. Note: units are often referred to as ones. For example, 34 has 3 tens and 4 units, or we could say 34 has 3 ...

Even though the digit (3) is repeated, it has a different value each time depending on what column it is in. This understanding of place value is at the heart of everything we do with numbers. Without ...