Five printable Grade 1 worksheets for the Making 10 addition strategy. Each sheet includes 8 problems covering partners of 10, bridge-10 facts within 20, and short word problems. Making 10 is a foundational mental-math strategy in Grade 1 Common Core (1.OA.6) that builds fluency for sums to 20. What's included: - 5 worksheets (8 problems each) - 1 answer key page - Black-and-white, ink-friendly - Letter size, no prep required Great for morning work, math centers, homework, sub plans, or homescho