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Compare, Order, and Round Decimals
Created by Shaunak Ghosh
You will learn to compare and order decimals up to the thousandths place, and round decimals to the nearest whole number, tenth, or hundredth. You will also practice using models, place value, and rounding to make smart “about” answers and solve real-life style problems.
Requirements
- Whole-number place value (ones to thousands)
- How to use >, <, and =
- Basic fraction idea: equal parts of a whole
- Comfort adding and subtracting whole numbers
What you'll learn
- Compare decimals up to the thousandths place using place value and correct symbols.
- Read and write decimals from tenths and hundredths grids, including whole-number parts and placeholder zeros.
- Order a list of decimals by comparing from the leftmost place and handling zeros correctly.
Learning path
8 modules • Each builds on the previous one
1
Compare decimals on number lines
Use a number line to place decimals (less than 1) and compare them. Learn how to figure out what each tick mark is worth, skip-count by 0.1 and 0.01, and use >, <, and = correctly.
4 videos16 min
2
Compare decimals on grids
Read decimals from shaded grids: tenths grids and 10×10 hundredths grids. Compare which shaded model is greater or less, find the whole-number part by counting full unit grids, and learn why 0.3 = 0.30.
2 videos9 min
3
Compare decimals using place value
Compare decimal numbers by checking digits from left to right (whole number, tenths, hundredths, thousandths). Practice true/false inequality statements and solve “missing digit” puzzles using 0–9.
1 video4 min
4
Order decimals least to greatest
Put decimals in order by comparing place values from left to right. Learn why trailing zeros don’t change the value, but zeros inside a decimal (like 3.04) do change it.
1 video4 min
5
Choose the correct rounded number
Use rounding rules to pick which number a decimal rounds to (multiple choice). Round to the nearest whole number, tenth, or hundredth and practice the “5 or more, raise the score” rule—plus what happens with 9s.
1 video6 min
6
Round decimals step-by-step
Round decimals by finding the rounding place, looking one digit to the right, and then changing digits after that to 0. Practice writing the rounded result (not multiple choice) to the nearest whole, tenth, or hundredth.
1 video7 min
7
Estimate decimal sums and differences
Estimate (find an “about” answer) by rounding each decimal to the nearest whole number first, then adding or subtracting. Practice with 2–3 addends and simple differences—without doing exact calculations.
1 video6 min
8
Word problems: compare, order, round
Solve real-life style problems using decimals (like weights, distances, and measurements) shown in tables. Decide whether you need to compare, order, or round—without doing “how much more” difference calculations.
1 video4 min
Start Learning
Begin your learning journey
Modules8
Duration51 min
Science-backed learning
In-video quizzes and scaffolded content to maximize retention.
Key concepts
Decimal Place Value To ThousandthsEquivalent Decimals And Trailing ZerosReading Decimals From Grids (Tenths And Hundredths)