This Year 1 Estimate on a Number Line to 20 Reasoning and Problem Solving worksheet aims to consolidate pupils' understanding of number lines. Children will identify whether an estimation is correct. They will also estimate numbers on a number line using the given clue.

There is one reasoning and one problem-solving question to complete. To continue the learning, you may wish to set up a practical version of the problem-solving question so children can practise estimating on a number line in your outdoor area!