Short Blocks

Maths Year 3 Spring Place Value

Each unit has everything you need to teach a set of related skills and concepts.

Partition 3-digit numbers; place on a line (suggested as 5 days)

Planning and Activities

Day 1 Teaching
Discuss how we mark 2-digit numbers on a line 0–100. Then mark 275 on a line 200–300. Discuss halfway, and where 275 goes. Repeat, marking numbers on a 400–500 line.
Group Activities
-- Create a game placing hidden 3-digit numbers between hundreds on a landmarked line.
-- Mark 3-digit numbers on landmarked lines.

Day 2 Teaching
Review the top tips written yesterday. Model how to think about half and quarter to help place 3-digit numbers on a 0–1000 line.
Group Activities
-- Place 3-digit numbers on 0–1000 landmarked lines.
-- Make and use a 0–1000 number line.
-- Play a game to find mystery numbers string ‘number line’.

Day 3 Teaching
Play the Nasty Game. Show a place value grid (100s, 10s and 1s). Write different numbers on the grid, discussing their place value.
Group Activities
-- Play the ‘Nasty Game’ to make and compare 3-digit numbers.

Day 4 Teaching
Compare and order numbers using the place value grid. Discuss which digit to look at when the hundreds digit is the same. Find 3-digit numbers which fall between two given 3-digit numbers.
Group Activities
-- Order numbers using number lines and place value.
-- Find numbers between pairs of 3-digit numbers.
-- Ask questions to determine a mystery 3-digit number.

Day 5 Teaching
Challenge children to write the largest 3-digit number using digits 0–9 only once each. Repeat for other target numbers.
Group activities
Use the in-depth problem-solving investigation ‘Counter Place Value’ as today’s group activity.
Or, use this activity.
-- Investigate making 3-digit numbers with given criteria.

You Will Need

  • Mini-whiteboards and pens
  • Blank landmarked line (see resources)
  • Sticky notes
  • ‘Placing 3-digit numbers on a landmarked line’ sheet (see resources)
  • Pot containing a range of 3-digit numbers on cards
  • ‘0–1000 landmarked lines’ sheet (see resources)
  • Strips of paper, counters and felt tip pens
  • Place value cards
  • String and pegs
  • 0–9 cards and sticky tack
  • 2- and 3-player Nasty Game sheets (see resources)

Mental/Oral Maths Starters

Day 1
Place 2-digit numbers on a 0–100 line (pre-requisite skills)

Day 2
Place value in 3-digit numbers (pre-requisite skills)

Suggested for Day 3
Tell the time to the nearest 5 mins (simmering skills)

Day 4
Compare pairs of 3-digit numbers (pre-requisite skills)

Suggested for Day 5
Round 2- and 3-digit numbers to nearest 10 (simmering skills)

Worksheets

Day 1
Place 3-digit numbers between hundreds on a number line.

Day 2
Place 3-digit numbers on a number line.

Day 3
Make and order 2- or 3-digit numbers using a range of starting digits.

Day 4
Order a series of 3-digit numbers. Find numbers between pairs of 3-digit numbers.

Day 5
Place value challenge: create 3-digit numbers according to given criteria.

Mastery: Reasoning and Problem-Solving

  • Sketch a 0–1000 line.
    Mark 500.
    Mark 350, 700 and 990.
    How can you demonstrate that you have marked these accurately?
  • True or false?
    Between any pair of next-door multiples of 100, there are always 98 whole numbers.
    The middle of a 500–1000 line is 800.
    There are ten numbers ending in 3 between 300 and 400.
    The digit 0 is used 18 times between 600 and 700.
  • Write numbers to make the sentences true:
    100 < ☐ < 110
    304 > ☐ > 302
    999 > ☐ > 888
    0 < 101 < ☐
    459 < ☐ < 461
  • Write the value of the 5 digit in these numbers:
    (i) 652
    (ii) 591
    (iii) 905

In-depth Investigation: Counter Place Value
Children place counters on a place value grid to make 3-digit numbers and then use logic to ensure they have made all the combinations.

Extra Support

In-betweenies
Placing numbers on a 0 to 100 landmarked line

Make the Number
Knowing the value of each digit in 3-digit numbers