Sum SmashGrade 1 · 1.OA.C.6, 1.OA.B.3
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Grade 1 · Arcade · Ages 6–7

Sum Smash

For grown-ups · the maths standard1.OA.C.61.OA.B.3Add and subtract within 20 fluently, using strategies like making ten.

  1. Look at the number at the top.
  2. Blast the sums that make it.
  3. A wrong one costs a heart.
Move: mouse / drag / ← → · Fire: tap or Space · 3 lives

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