Take away without losing the place values
Full educator lesson · Pupil invitation · Empty work mat · Optional home activity · Larger project · Written read-together script · Additive Work Bench
Child direction
Can a repair drawer show what is left clearly? Pick one route. Show what the numbers mean, try a way, then check one result. You can stop after a useful part.
Purpose
Subtract through regrouping or a connected count-up check.
Complete fictional source
A fictional repair drawer starts with 806 labels. It uses 247 labels once. Find labels left.
One own invitation
For 603 − 157, show what remains and a connected check.
Access
Show, draw, type, sign, use your usual communication or direct an agreeing helper. Choose quiet/private work, switch a route, pause, pass or finish. One useful part is enough. A helper can read the exact words or scribe your choices; supplying an operation, count, regrouping or reason is mathematical help and is named. No speed, neatness, speech, handling or device requirement.
Routes
Id
A
Title
Small paint labels
Complete task
A fictional drawer has 63 labels and uses 28. Find what remains with regrouping.
Entry or access
No actual paint or material handling is needed.
Access
Show, draw, type, sign, use your usual communication or direct an agreeing helper. Choose quiet/private work, switch a route, pause, pass or finish. One useful part is enough. A helper can read the exact words or scribe your choices; supplying an operation, count, regrouping or reason is mathematical help and is named. No speed, neatness, speech, handling or device requirement.
Id
B
Title
Repair drawer
Complete task
Use 806 − 247. Make a left-count record with a check.
Entry or access
Describe bundles instead of drawing hundreds of marks.
Access
Show, draw, type, sign, use your usual communication or direct an agreeing helper. Choose quiet/private work, switch a route, pause, pass or finish. One useful part is enough. A helper can read the exact words or scribe your choices; supplying an operation, count, regrouping or reason is mathematical help and is named. No speed, neatness, speech, handling or device requirement.
Id
C
Title
Archive use
Complete task
An invented archive has 2004 cards and retires 786. Find remaining cards using two approaches.
Entry or access
Check thousands entry and the meaning of retiring a count.
Access
Show, draw, type, sign, use your usual communication or direct an agreeing helper. Choose quiet/private work, switch a route, pause, pass or finish. One useful part is enough. A helper can read the exact words or scribe your choices; supplying an operation, count, regrouping or reason is mathematical help and is named. No speed, neatness, speech, handling or device requirement.