10 Fun Games with the 100 Square

Hundred squares are a great resource for Maths. Why not have a go at one or more of these simple games? All that is needed are 100 squares (filled in/ blank), dice and counters.

  1. Cover-up
    Cover up one or more squares using counters. The child has to guess which numbers are hidden under the counter/s.
  2. Adding and subtracting 10
    Add or subtract 10 from any number. What is happening to the number each time? (The units or ones number will stay the same and the 10s will increase or decrease by 10.) After some practise children will be able to go down the columns to add 10 and up the columns to subtract 10. They will need to find this out by counting along 10 at first.
  3. Adding or subtracting game
    Use the 100 square as a ‘snakes and ladders’ type board. Roll a dice, say the number, count the squares and move your counter. Or use two dice, add the numbers and move your counter. Either move from 1-100 by adding or from 100-1 by taking away.
  4. Race to the target
    Use a blank 100 square. Time how long it takes to fill in the numbers. Begin up to 20, 30 or 50. Repeat to see if they can improve on their time.
  5. Missing numbers
    Draw pieces of the 100 square on the blank side with only some of the numbers filled in. Children think about the numbers and the patterns to fill in the empty spaces.
  6. Squares
    Highlight a 2 by 2 square. What do you notice? Is it always the same? Add the numbers in opposite corners.
  7. Patterns
    Cover the multiples of 2, 3, 5 and 10 etc (one multiple at a time).Use the patterns to predict which numbers will be in the sequence.
  8. Finding 100
    Find pairs of numbers on the hundred square that total 100. How many different pairs can you find? Which two numbers do not have a partner?
  9. Digit sums
    Use counters to cover numbers on the hundred square whose digits add up to 10. Explain the patterns that you notice. Use a different colour counter to cover numbers whose digits add up to 9, 8, 7 etc. Can you explain what is happening each time?
  10. Counter collect
    Cover the numbers on the square with counters. Throw two 0 – 9 dice and make a 2-digit number. Work out which counter the number is hidden under. If you are right, keep the counter. If you are wrong, put the counter back down. How many counters can you collect in 5 or 10 minutes? Play again and try to beat your record.

 

 

Partitioning

Partitioning is a useful way of breaking numbers up so they are easier to work with.

The number 746 can be broken down into hundreds, tens and ones. 7 hundreds, 4 tens and 6 ones.

The number 23 can be broken down into 2 tens and 3 ones. 

However you break the number down, it will make maths easier!

Can you partition these numbers?

  1. 502
  2. 6371
  3. 910
  4. 300
  5. 759
  6. 9022

Riddle – What am I?

I am a three digit-number.

In the ones place, the value is an odd number and is half the digit in the hundreds place.

In the tens place, the digit is the highest even number.

There are 6 hundreds.

What number am I?

Exercise

The boys in 2P are learning about the heart and how to locate the pulse. They have also found out how to keep the heart healthy.

Did you know?

Your heart is really a muscle. It is located a little to the left of the middle of your chest, and it is about the size of your fist. There are many muscles all over your body — in your arms, in your legs and in your back.

The heart muscle is special because of what it does. The heart sends blood around your body. The blood provides your body with the oxygen and nutrients it needs. It also carries away waste e.g. carbon dioxide.

Your heart is sort of like a pump or two pumps in one. The right side of your heart receives blood from the body and pumps it to the lungs. The left side of the heart does the exact opposite: It receives blood from the lungs and pumps it out to the body.

We enjoyed trying different exercises to make our hearts beat faster. These included clapping, jumping, hopping, touching our toes, catching and running on the spot.