Place value in 2-digit numbers - Problem-Solving Investigation - Year 1

Year 1 Place Value: Problem-Solving Investigations

These in-depth Year 1 Place Value problem-solving investigations will develop maths meta-skills, and enable children to learn to think mathematically and articulate mathematical ideas. * Partition teen numbers; compare numbers to 20 * Count to 100 in 1s and 10s * Compare/order numbers < 100 * Count to 100 in 1s and 10s; say 1 or 10 more/less * Place value in 2-digit numbers * Compare and order 2-digit numbers using place value * Order 2-digit numbers using place value; say 10 more/less. **In-depth Investigation: Fill in the Box** Children fill a matchbox with items and count them accurately. **In-depth Investigation: Tricky Tracks** Children use reasoning and logic to play ahead in playing a game on a 1-20 track. **In-depth Investigation: Domino Digits** Children find which numbers on a 1 - 100 grid they can make using dominoes - each domino can only be used once. **In-depth Investigation: Pairs in Purses** Children use reasoning and logic to work out pairs of 2-digit amounts that can be made in the two purses given only ten coins. **In-depth Investigation: Calculator Capers** Children create teens numbers using place value additions. **In-depth Investigation: New Neighbours** Children use digit cards to make 2-digit numbers between neighbouring multiples of 10. These problem-solving investigations are part of our [Year 1 Place Value](https://www.hamilton-trust.org.uk/maths/year-1-maths/place-value/) block. Each Hamilton maths block contains a complete set of planning and resources to teach a terms worth of objectives for one of the National Curriculum for England’s maths areas.