### Teaching and Group Activities for Understanding

**Day 1 Teaching**

Model writing 6-digit numbers dictated in words and show the place value of each digit using a place value chart. Add/subtract of powers of 10.

**Group Activities**

-- Select a digit from a 6-digit number and write its value. Repeat with other digits. Check by adding.

-- Eliminate digits from a 6-digit number, 1 or 2 at a time, using numbers based on a dice roll.

-- Write a 6-digit number and make it into 555,555 by adding/subtracting numbers of up to 6 digits.

**Day 2 Teaching**

Start with a 6-digit number and add/subtract 1s, 10s, 100s, 1000s, 10,000s and 100,000s. Add and subtract multiples of these powers of 10.

**Group Activities**Use the in-depth problem-solving investigation ‘Activity Set A’ from NCETM.org.uk as today’s group activity.

Or, use these activities:

-- Write a 6-digit number and make it into 555,555 by adding or subtracting 1s, 10s, 100s, 1000s, 10,000s and 100,000s.

-- Make 999,999, by adding 1s, 10s, 100s, 1000s, 10,000s and 100,000s based on a dice roll. Repeat for subtraction to make 111,111.

-- ’Spend’ £999,999 by subtracting 6-digit numbers based on a dice roll. Make a million by adding two 6-digit numbers.