⭐ –
The Ten Machine
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🧮
✖️
📊
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START

1Choose exercise

2Operation

With which numbers?

3Difficulty

4Game mode and support

📋 Show the position tableThe numbers appear in the table while you think. If you turn it off, the table will only show after you have answered.
🔔 Sound effectsThe machine beeps, hums, and chimes.

5Read aloud

How to play

  1. Choose exercise, operation, and difficulty level.
  2. Press START.
  3. Answer with the buttons on the screen or with the keyboard. Enter sends the answer.
  4. Look at the table while the machine counts. How many steps did the numbers move, and in which direction?

What you practice

  • Times 10, 100 and 1000The numbers move one, two, or three steps to the left and the number gets bigger.
  • Divided by 10, 100 and 1000The numbers move to the right and the number gets smaller, sometimes becoming a decimal number.
  • The positional systemEach place is worth ten times the place to the right of it.
  • Count backwardsTimes and divided by cancel each other out.

Results

0Rounds
–Best round
0Longest streak
0Record in time trial

Why do the numbers move?

In the place value system, every position is worth ten times as much as the position to its right. When you multiply by 10, each digit moves one place to the left and becomes ten times as much.

The decimal point always stays in the same place between the ones and the tenths. That is why it is better to think of the digits moving than adding a zero. The zero rule does not work for 3.5 times 10.

If there are empty spaces between the digits and the comma, fill them in with zeros.