Adding Decimals Using Base Ten Blocks

True or false: The blocks show the decimal numbers of 6.47 + 3.26.

• False

• True

What is the value of the decimal base ten blocks?

• 5.06

• 5.06

• 0.56

• 56.0

• 1.23

• 123

• 12.3

• 0.123

• one and four tenths

• fourteen

• one hundred forty

• one and four hundredths

• 81

• 89

• 99

• 91

Count the base ten blocks.

What is the sum?

• 98

• 89

• 109

• 32

• 1.3

• 1.03

• 13

• 13 hundredths

• 3.6

• 36

• 0.36

• 0.0236

• one and fifteen hundredths

• one hundred fifteen

• one and fifteen tenths

• one and fifteen thousandths

• one and twenty-four tenths

• one and twenty-four hundredths

• one hundred twenty-four

• one and twenty-four thousandths