Describe how you labeled the bar model and wrote a number sentence to solve.

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Draw a scaled copy of the circle using a scale factor of 2

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.