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Overview
Overview
Taking from 10 is a subtraction strategy in which students decompose one number to find the anchor of ten and subtract from it.
Taking from 10 is a strategy in the addition/subtraction continuum. It is further along the continuum because to use this particular strategy, students should be comfortable working with and decomposing numbers.
Students must also know the combinations that make ten in order to use this strategy efficiently.
This strategy involves students using ten-anchors to split numbers. They will take from 10, then add the leftover back on.
Students have an understanding that 10 is a friendlier number, so they subtract from the 10, then add on the remaining from the start number back on.
Students are able to recognize they can subtract easily with a 10, or by making a 10.
Marcus splits the start number into 10 and whatever is left, subtracts 8 (the second number) from 10, and then adds the rest of the start number back on.
A powerful strategy for children to possess is using facts that they know to assist them in determining the answer to facts that they do not know.
Note #1
For this strategy students are comfortable working with numbers. They will split the larger number into 10's and ones and then proceed to subtract from the 10. Once they have completed that, they will then add the ones back in.
Note #2
Students must be comfortable with making 10 and should practice this in various ways before working through this strategy.
Note #3
This strategy is the beginning steps of moving towards using the Splitting Strategy
Supporting Students with Taking from 10
Supporting Students with Taking from 10
Use tools like the rekenrek to model student thinking when one fact is derived from another.
Strategy 1
Practice making 10 using addition and subtraction. Using a ten frame may help
Strategy 2
Practice composing and decomposing numbers.
Strategy 3
Work through problem using base 10 blocks and a place value placemat.
Games to Promote Taking from 10
Games to Promote Taking from 10
A modified version of the traditional "war" card game. This game provides a wider range of 'known facts' to be used to determine the sum of the two cards flipped. (Lawson; pg. 176).
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