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About this worksheet
Forty-eight subtraction problems with differences within 20, laid out six to a row under a crisp apple and green border. Every problem takes a single-digit number away from a number between 10 and 20, which is exactly the range second graders are expected to know by heart.
This is the page to use before any two-digit work. A child who still counts on fingers here will stall once regrouping arrives, so it is worth returning to until the answers come quickly.