Add Decimals

Use place value to add or subtract

Use only mental math

Skip the hundredths place

Focus on whole numbers only

To compute sums and differences of decimal numbers

To learn about fractions

To understand whole numbers

To memorize multiplication tables

Line up the numbers

Line up the decimals

Add or subtract like normal

Add in placeholders

Line up the decimal point

Add the digits with different place value position

Bring the decimal point straight down in the sum

Add the digits in the same place value positions

Subtract the digits in the same place value positions

0.51 gram

0.81 gram

1.71 grams

1.89 grams

didn't regroup 14 tenths as 4 tenths and 1 one hundredths

did not regroup the 10 hundredths as 1 tenth

did not regroup the 15 tenths as 5 tenths and 1 one

regrouped correctly in the hundredths, tenths, and ones