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In-depth Investigation: Mobile Towers
Children create 4 or five 2-digit numbers and add these to get different totals.
In-depth Investigation: Investigating 11
Look for patterns when adding numbers with a difference of 11. See Day 5 group activity 1 for details.
In-depth Investigation: Super Shapes
Find the value of the red shape in the addition problems. Super Shapes from www.nrich.maths.org.
In-depth Investigation: Place Value Puzzles
Solve the place value subtraction puzzles.
In-depth Investigation: Magical Subtractions
Children subtract the digital root of a 3-digit number from that number. Magic ensues!
In-depth Investigation: Step Change
Children find change from 2 or 3 notes. They explore patterns in the pence.