Millions Counter

Investigate numbers

• Enter your own start number, or use the + and – buttons to change the digits to make the required number.
• Read the number in words below.
• Hide either the number or the words to ask questions in class.

Add or Subtract 100, 1000, 10,000 etc.

• Click on green tick to start
• Use the + and – buttons to try to reach the target number in the number of clicks given
• The question will turn green if achieved or red if not.
• Click Random Number for a new challenge

Investigate Rounding

• Drag the vertical rounding bar with the <| from the right of the units column
• Drag unit the nearest required is highlighted (e.g. round to nearest hundred)
• Notice red zeros, but purple number will need to be adjusted up or down with fewest clicks to get to zero
• Note what happens to first black number when rounded up
• Moving rounding overlay back to right will reset number to beginning.