Core Concept 1.1
Place value, estimation and rounding
Core concept 1.1 covers the structure of our place-value system (particularly as it relates to decimals) and rounding numbers to a required number of decimal places or significant figures.
Base Blocks - Dienes Blocks from base -10 to 10
22.214.171.124 Understand place value in decimals, including recognising exponent and fractional representations of the column headings
Decimals - multiple representations of decimals to 3d.p. between 0 and 1
Change the sliders to change the area model, number line and bar model. Compare the three representations.
Is 0.632 closer to 0.63 or 0.64?
Is 0.637 closer to 0.63 or 0.64?
Is 0.635 closer to 0.63 or 0.64?
The top number line is set to 2 dp, the middle to nearest whole number and the bottom to 1 decimal place. Move the top slider and see when the bottom sliders move.