Place+value

Calculator activities

Appearing and Disappearing Numbers
You need: Calculator Enter a number (eg, 2) say the number Next student enters another number after the first and says the new number on display (eg, 25) Enter another number and say the number on display (eg, 256) Extend this by working out how to get back to 0. What do you need to do to get rid of the 6? What does 6 here represent? How do you get rid of the 5? How do you get rid of the 2? Dice activities

Number Cruncher
You need: 10-sided dice, mini-whiteboard and markers Roll 3 10-sided dice.
 * Write down the smallest number that you can make
 * Write down the largest number that you can make
 * Write down all the other numbers that you can make
 * Can you put all the numbers that you can make in ascending order?
 * Can you put all the numbers that you can make in descending order?
 * To make harder - add more dice.

Dice Chicken
You need: 10-sided die, mini-whiteboard and markers Draw up 4 columns for each player - Thousands, Hundreds, Tens and Units. Player 1 rolls the die. That player chooses which column to write the number in on their whiteboard. Next player rolls the die and chooses a column to write the number in. Continue until all columns used for each player.
 * Aim is to make the biggest number possible (or smallest).
 * Each number has to be entered into a column as it is rolled - no changing your mind!

Extend by adding more columns. <span style="font-family: Verdana,Geneva,sans-serif; font-size: 130%;">100 chart

Number Scrabble
<span style="font-family: Verdana,Geneva,sans-serif;">Material: One 1 to 100 chart <span style="font-family: Verdana,Geneva,sans-serif;">One set of numbers 1 to 100 <span style="font-family: Verdana,Geneva,sans-serif;">Players: Group of two to four <span style="font-family: Verdana,Geneva,sans-serif;">Rules: Each player picks up 7 numbers and places them in front of him or herself so that they are not visible to the other players. Each player in turn places a number anywhere on the chart. In the next, and all other rounds, the number must be placed beside, above, or below one of the numbers already on the board. If the player cannot place a number then another must be drawn from the pile and play passes to the next player. The first player to put all of his or her numbers on the board is the winner.

<span style="font-family: Verdana,Geneva,sans-serif;">To extend use a blank 100 grid rather than a 100 chart.