This presentation provides three days of teaching that cover the objectives: Choose either column subtraction or Frog (counting up subtraction) as appropriate It includes starter activities, whole class teaching, group activities, practice sheets and mastery questions. It can be used on a variety of interactive whiteboards. Day 1 Teaching Write on the board 45,706 – 28,342 as an expanded vertical subtraction and a compact vertical subtraction. Solve together to revise these strategies. Next, write on the board 42,567 – 21,348; 51,230 – 24,769; and 34,213 – 22,048. Ask children which will be the fastest to work out and why. Discuss what makes column subtractions more or less efficient (more digit moves could make it more error-prone). Day 2 Teaching Write on the board 58,274 – 32,689; 50,000 – 47,892; 45,678 – 29,999; 63,428 – 20,002; 4002 – 3789; 3567 – 1999; 6428 – 2731; and 5438 – 3002. Children discuss, choosing four calculations they would solve mentally, and one for which they would use column subtraction. Which of the calculations lends itself to being solved by counting up (Frog)? (50,000 – 47,892, as it would need moves across four columns). Remind children that there are no ‘right’ or ‘wrong’ choices of preferred methods to solve calculations. Day 3 Teaching Write on the board: 4005 – 3789; £10.00 – £7.46; 61,003 – 45,869. Children use counting up (Frog) to work out one of these, sharing workings. Demonstrate on the board. Subtractions with lots of zeroes are probably best done with Frog, not column subtraction. Finding change (£10 – £7.46) is also best-done using Frog, This teaching is part of Hamilton’s Year 5 Addition and Subtraction block. Each Hamilton maths block contains a complete set of planning and resources to teach a term’s worth of objectives for one of the National Curriculum for England’s maths areas.

This activity is designed to be used by a teacher or a TA with children who need extra support before they can tackle these objectives: Choose either column subtraction or Frog (counting up subtraction) as appropriate. Faithful Frog - Using counting up (Frog) to subtract 4-digit numbers either side of multiples of 1000, e.g. 5003 – 4984 Frazzled Frog - Using counting up (Frog) to subtract 4-digit numbers, with ‘larger gaps’, either side of multiples of 1000, e.g. 5214 – 4867 This Extra Support Activity is part of our Year 5 Addition and Subtraction block. Each Hamilton maths block contains a complete set of planning and resources to teach a term’s worth of objectives for one of the National Curriculum for England’s maths areas.

This in-depth maths investigation is an open-ended problem solving activity for Year 4 children. It can be used to support teaching towards the objectives: Choose either column subtraction or Frog (counting up subtraction) as appropriate. In-depth Investigation: Durer’s Magic Square Children complete ‘Durer’s Magic Square’, then use it to create 2- or 3-digit numbers and find the difference between different pairs. They identify patterns. This investigation will develop maths meta-skills, support open-ended questioning and logical reasoning, and enable children to learn to think mathematically and articulate mathematical ideas. This problem-solving investigation is part of our Year 5 Addition and Subtraction block. Each Hamilton maths block contains a complete set of planning and resources to teach a term’s worth of objectives for one of the National Curriculum for England’s maths areas.

Year 5 Addition and Subtraction: Choose either column subtraction or Frog (counting up subtraction) as appropriate. Procedural fluency practice worksheets to achieve maths mastery. Differentiated for children working towards Age Related Expectations (ARE), at ARE and at greater depth. Includes answers. Day 1 - Use column subtraction to subtract pairs of 4- or 5-digit numbers. Day 2 - Choose counting up (Frog), counting back or column subtraction to subtract. Day 3 - Choose to use column subtraction or counting up (Frog) to work out subtractions. Reason about strategy choices. These procedural fluency practice sheets are part of our Year 5 Addition and Subtraction block. Each Hamilton maths block contains a complete set of planning and resources to teach a term’s worth of objectives for one of the National Curriculum for England’s maths areas.