Theory
How do you read a decimal on the number line?
On a number line, the steps between the tick marks are always the same size.
The step size tells you how much one step is worth, for example 0,1 or 0,01.
Count how many steps the point is from the starting point and add that value to the starting point.
- Calculate the distance from the starting pointMultiply the step size by the number of steps to the point.
You use multiplication with equal groups.
A × B means that you take the same amount B, A times.Instead of adding again and again, you calculate the product all at once.
- Add the distance to the starting pointIf the number line does not start at 0, add the distance to the starting point.
When adding, you combine two amounts.
You can count from left to right, but with larger numbers it is often easier to make a round number first.
If you use part of the second number to fill up the first number, then after that you only need to add the rest.
- See if you can add on in a smart wayWith larger numbers, you can often make a round number first.
- Add the restThen add what is left.
- See if you can add on in a smart way
Which decimal belongs to the marked point?
- Calculate the distance from the starting point0,1 × 6 = 0,6.
- Add the distance to the starting point0 + 0,6 = 0,6.
- See if you can add on in a smart wayGebruik direct optellen bij 0 + 0.6.
- Add the rest0 + 0.6 = 0.6.
- See if you can add on in a smart way