Let's unmask decimals! A decimal number can be written in two expanded forms. The first uses addition, and the second uses both addition and multiplication. Check out the example to see how it works, then complete the exercises.

The expanded form shows what each digit is really worth. Let's break apart 3.47. The 3 is in the ones place, so that's 3. The 4 is in the tenths place, so that's 0.4. The 7 is in the hundredths place, so that's 0.07. The decimal number 3.47 can be written in two expanded forms. The first is with addition: 3 + 0.4 + 0.07. The second is with addition and multiplication: 3 x 1 + 4 x 1/10 + 7 x 1/100. Now you know the secrets, grab your pencil and take on the challenge.