Trailblaze Education Logo
Decimal Number Line Reasoning

Decimal Number Line Reasoning

Number & Place Value
Year 5
Set status
5NPV–3: Reason about the location of any number with up to 2 decimals places in the linear number system, including identifying the previous and next multiple of 1 and 0.1 and rounding to the nearest of each.
Enhances students' ability to estimate, calculate, and understand the relative size of decimal numbers.
Required Topics
Not started IconNumber Line and Rounding for Four-digit Numbers
Not started IconPlace Value with Decimals
Next Topics
Not started IconUnderstanding Fractions of One
Not started IconNumber Line and Rounding Mastery
Resources
Hugo Cheyne5 months ago
https://www.khanacademy.org/math/cc-fifth-grade-math/imp-place-value-and-decimals/imp-rounding-decimals/v/rounding-decimals-on-the-number-line

Shows how to round decimals using a number line, visually showing which whole number, tenth, hundredth, or thousandth is closest. Builds off intuition of rounding rules and connects rounding to the nearest place value on the number line.

Hugo Cheyne5 months ago
https://www.khanacademy.org/math/cc-fourth-grade-math/imp-decimals/imp-decimals-on-the-number-line/v/graphing-tenths-from-0-to-1-math-4th-grade-khan-academy

A series of videos and interactive exercises. Really clearly shows the number line and goes through placing 10ths and 100ths on it.

Hugo Cheyne5 months ago
https://www.bbc.co.uk/bitesize/articles/z3b84qt#zhns3qt

A real life interactive example about working with textiles (building cushions) and how to accurately measure decimals along a number line (i.e. a ruler)