*NEW! PV 40, 41 AS 42 43 (OLD PV17 AS21) 4-DIGIT PV AS 2-3 DIGIT

PLACE VALUE 40 Place Value beyond 1000 (old PV 17 PA 16)
PLACE VALUE 41 Count, order numbers beyond 1000 (old PV 17 PA 16)
ADDITION & SUBTRACTION 42 Add and subtract 2- and 3-digit numbers (old AS 21)
ADDITION & SUBTRACTION, ALGEBRAIC THINKING 43 Unknown values in addition & subtraction (old AS 22 PA 20)

NB: ALL RESOURCES ARE ALSO ON OUR NEW SITE AND ARE MUCH MORE EASILY ACCESSED! TRY NOW!

The ELEMENTS in this group are intrinsically related because Place Value concepts have an empirical and logical basis to Addition & Subtraction concepts. In other words, when we add and subtract without counting by ones, we are using our understanding of Place Value concepts.

Once a student has demonstrated and explained their understanding of adding and subtracting 2-digit numbers using compensation, the focus is adding and subtracting numbers beyond 1000 flexibly. Algorithms negate this focus.

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