A fun game to help students practice the doubles minus one addition strategy.
Use this teaching resource in the classroom when teaching near doubles.
In pairs, students roll a die, double their number, then subtract one. Students cross off their answers on the grid worksheet provided. The first student to cross off all of their numbers wins!
Common Core Curriculum alignment
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - ...
Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
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