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Created by Shaunak Ghosh
You will learn to read and write decimals up to thousandths using models, place value words, and charts. You will also practice writing decimals in expanded form, connecting decimals to fractions, spotting equivalent decimals with trailing zeros, and decomposing decimals in more than one way.
7 modules • Each builds on the previous one
Use base-ten models (flats, rods, cubes) to represent decimals. Practice counting blocks, using the given unit (like 1 cube = 0.01), and writing a decimal to hundredths using zeros for missing places.
Learn to read and write decimals to thousandths in word form and standard form. Use correct place value names (tenths, hundredths, thousandths) instead of incorrect phrases like “twenty-one tenths.”
Practice two skills: (1) name the place of a digit in a decimal, and (2) tell which digit is in a given place. Work with whole numbers up to thousands and decimals to thousandths.
Write decimals to thousandths in expanded form using decimal values (0.1, 0.01, 0.001). Use single-digit factors for each place and avoid endings like 5.230 (write 5.23).
Write decimals to thousandths in expanded form using unit fractions (1/10, 1/100, 1/1000). Read and understand expressions like 7 × 1/100 as “seven hundredths.”
Learn why decimals like 0.70, 0.700, and 0.7000 are equal. Practice identifying equivalent decimals (up to thousandths) and avoid the mistake of thinking extra zeros change the value.
Break a decimal into different equal expanded forms and place-value word decompositions (like 8 ones + 17 hundredths + 6 thousandths). Use the idea that 10 of one place equals 1 of the place to the left.
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In-video quizzes and scaffolded content to maximize retention.