Grade 1 Math 5.5, Unknown (missing) numbers, related facts

How we can use related facts (fact families) to find an unknown number. Finding an unknown addend, sum, minuend, subtrahend, or difference by using related facts. Using blank cubes or drawing a picture with related facts. Several word problems are included in this lesson. Grade 1 Math Playlist SUPPORT MY WORK: PATREON PAYPAL […]

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