Key Stage 2 · Arithmetic

Estimating & Checking

Choose a level. Each round has 10 questions, and you can ask me for hints any time!

1 Estimating sums Round to the nearest 10 or 100 first. Years 3–4 🖨 Printable worksheet

2 Estimating products Round both numbers to the nearest 10. Years 4–5 🖨 Printable worksheet

3 Checking with the inverse Add back to check a take-away, multiply to check a division. Years 3–4 🖨 Printable worksheet

4 Is it right? Use the inverse to spot mistakes. Years 4–5 🖨 Printable worksheet

5 Best estimate Which answer is about right? Years 5–6 🖨 Printable worksheet