I WONDER - What Is A Decimal?

The video tutorial explains decimals as numbers that are not whole, using a decimal point to separate the whole part from the fractional part. It describes decimal places with examples like 8.75 and 0.125, and explains how decimals represent numbers between whole numbers, such as 5.5. The tutorial also shows the equivalence of decimals and fractions, using examples like 5.5 and 5 1/2, and 4/10 as 0.4. Finally, it introduces a visual method using a hundred-square grid to understand decimals, illustrating how 20 colored squares represent 0.2.

What is the purpose of a decimal point in a number?

• To show that a number is negative

• To separate the whole number from the fractional part

• To indicate the end of a number

• To separate thousands in large numbers

How many decimal places are there in the number 0.125?

• One

• Two

• Three

• Four

Which of the following is equivalent to the decimal 0.4?

• 1/4

• 2/5

• 3/8

• 4/10

What is the decimal representation of 5 and 1/2?

• 5.2

• 5.25

• 5.5

• 5.05

Why do we say 0.2 instead of 0.20?

• Because decimals do not end in 0

• Because 0.20 is incorrect

• Because 0.2 is a larger number

• Because 0.20 is a fraction