# Comparing and Rounding Decimals

## Presentation on theme: "Comparing and Rounding Decimals"— Presentation transcript:

Comparing and Rounding Decimals
Christine Berg Edited V Hamilton

Decimal Places 1000 = thousand 100 = hundred 10 = ten 1 = one
0.1 = tenth 0.01 = hundredth = thousandth = ten-thousandth

Read the number before the decimal point

Read the decimal point as “and”

Read the number after the decimal place

Follow the second number with the place value of the last digit Hint
Reading Decimals Step 4: Follow the second number with the place value of the last digit Hint

Draw and imaginary line underneath
Reading Decimals Hint .05 Draw and imaginary line underneath

Reading Decimals Hint .05 Place a 1 under the decimal
Place zeroes under each of the following numbers . 05 100

Comparing Decimals Decimal Models Equivalent Decimals Number Line

Decimal Models Tenth Hundredth

Equivalent Decimals Decimals that represent the same value Example:
0.6 is equivalent to 0.60 0.6 = 0.60

Terminal Zeroes Zeroes as last digit(s) of a number can be removed
0.6 = 0.60

Equivalent Decimals 0.6 0.60

Comparing Decimals Step 1:
Underline the first number that is different in the numbers being compared

Add terminal zeros so there are the same number of decimal places
Comparing Decimals Step 2: Add terminal zeros so there are the same number of decimal places

Comparing Decimals Step 3: Remove the decimal point

Order numbers depending on the directions given
Comparing Decimals Step 4: Order numbers depending on the directions given

Replace decimal point and remove terminal zeroes
Comparing Decimals Step 5: Replace decimal point and remove terminal zeroes

Which is greater: 0.6 or 0.58 ?

0.60 0.58 0.6 > 0.58

Which is greater: 0.6 or 0.58 0.6 0.58

Underline decimal place we are rounding
Rounding Decimals Step 1: Underline decimal place we are rounding

Circle the number to the right of the underlined decimal place
Rounding Decimals Step 2: Circle the number to the right of the underlined decimal place

Rounding Decimals Step 3:
If circled digit is greater than or equal to 5, then round the underlined number up (add one)

Rounding Decimals Step 4:
If circled digit is less than or equal to 4, leave the underlined number the same

1)Round 1.05 to the nearest tenth
Rounding Decimals Try these: 1)Round 1.05 to the nearest tenth 2) Round to the nearest tenth

Rounding Decimals Answers: 1) 1.1 2) 0.12