Decimal Number Value Concepts

Prior knowledge

Whole numbers, place value of whole numbers, rational numbers (1/2, 1/3...), know the relationships of whole numbers and fractional numbers (> < =), order whole and fractional numbers, meaning of estimation, familiarity with percentBackground information for Sequence ideas

Connect fractions to decimals

Create a problem (subway sandwich) so that it can be represented in tenths. Students can solve with fractions and then transition to decimals

Represent whole, fractional, and decimal numbers in tenths, hundredths, thousandths and (><=)

Adding decimals is like adding fractions with common denominators

Multiplication and division. Five and eight tenths meters of paper shared equally with five groups. Base

Concepts Problems/activities Outcomes Whole numbers and their relative values Decimals are another way of writing fractions Base ten is infinite in both directions Decimal point can represent "and" when reading decimal numbers Decimal point locates the units position Percent as hundredths Dr. Robert Sweetland's Notes ©