FLASH SUBTRACTION
subtraction · subtracting within 20 using visual memory of dominoes
To subtract numbers within 20 [1.OA.C.6].
FLASH SUBTRACTION is a Grade 1 domino game that practices subtraction within 20 through visual memory. Students briefly view a domino, recreate its dot pattern after it is hidden, and use the represented values to write and solve a subtraction sentence. The short viewing time encourages students to attend to quantities while the follow-up recording keeps subtraction reasoning at the center.
Use it for small-group practice when students are connecting visual quantities to subtraction equations. Ask students how they remembered the two sides and how they decided which value should be subtracted. Generate teacher-ready support for FLASH SUBTRACTION with a free Find a Math Game account. No credit card is required; 3 lesson generations for life.
- Grades:
- 1
- Players:
- 2–4 players
- Materials:
- dominoes, paper
- Classroom use:
- small group
Standards alignment
Official Rules
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