Wyoming Math 3.OA.7
The Standard
Fluently multiply and divide with factors from 1 to 10 using mental strategies. By end of Grade 3, know automatically all products of one-digit factors based on strategies.
2023 Wyoming Mathematics Content and Performance Standards · Multiply and divide within 100.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students multiply numbers from 1 to 10 in their heads. They use those facts to solve related division problems.
What Mastery Looks Like
- A student can answer 7 × 8 = 56 without counting by sevens. They can then use that fact to solve 56 ÷ 7 = 8.
Common Misconceptions
- Some students add the factors, giving 13 for 6 × 7. Others count by ones for every fact or say 42 ÷ 6 = 6 because they confuse the number of groups with the number in each group.
How to Assess It
- On an exit slip, ask: “Find 7 × 8 and 56 ÷ 7 without a chart. How could 5 × 8 help you check your first answer?”
Lesson moves
Ways to Teach It
Build 6 rows of 7 counters, then rearrange the 42 counters into 7 equal groups to show 42 ÷ 7.
Ask partners: “How could 5 × 8 help you find 7 × 8?” Have them explain the two extra groups of eight.
Draw two factor cards from 1 to 10, say the product, then write a matching division fact and check with a partner.
Show a receipt for 8 packs of 6 pencils; ask for the total and how many packs make 48 pencils.
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Printable 3.OA.7 Worksheet
A ready-to-print activity worksheet aligned to 3.OA.7, with an answer key for the teacher on its own page. No account needed.
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Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know automatically all sums of two one-digit numbers based on strategies.
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Use strategies based on place value, the properties of multiplication, and/or the relationship between multiplication and division to find quotients and remaind...
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