# Collected Resources

Find collected resources for your year group: all our Procedural Fluency Practice Worksheets, Extra Support, Problem-Solving Investigations and SPAG Presentations.

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Mastery: Reasoning and Problem-Solving

### Column addition: 3 or more 2-digit nos

Maths
Y4

In-depth investigation: Dicey Operations
Adapt Game 1 to add three or four 2-digit numbers, aiming for a target total as close as possible to 200. Dicey Operations from nrich.maths.org.

Mastery: Reasoning and Problem-Solving

### Subtraction strategies; written methods

Maths
Y4

In-depth Investigation: Wonderful 1089!
Children add two 3-digit numbers and subtract a pair of 3-digit numbers to find patterns. They use mathematical reasoning to begin to explain what they find.

Extra Support

### Subtraction strategies; written methods

Maths
Y4

Are We Nearly There Yet?
Using counting up (Frog) to subtract numbers either side of 100, e.g. 102 - 97 and 102 - 78

Worksheets

### Subtraction strategies; written methods

Maths
Y4

Day 1
Use empty number lines to subtract pairs of 3-digit numbers by counting up.

Day 2
Use expanded column subtraction to subtract 3-digit numbers.

Day 3
Choose counting up or column subtraction to subtract 3-digit numbers.

Day 4
Find and correct mistakes in subtractions using counting up and column subtractions.

Extra Support

### Column addition: 3 or more 2-digit nos

Maths
Y4

Do the Splits
Adding two 3-digit numbers using partitioning

Mastery: Reasoning and Problem-Solving

### Count up to find change & differences

Maths
Y4

In-depth investigation: Dicey Operations in Line
Adapt Game 2 to subtract pairs of 3-digit numbers, aiming for a difference as close as possible to 400. Dicey Operations in Line from nrich.maths.org.