Seven pages for the 2nd grade unit on subtracting within 100. Page 1 is a pre-check to give before the unit, on what it builds on: subtraction facts, tens and ones, trading a ten, taking away tens and adding two-digit numbers. Pages 2 and 3 are a review to do together before the test. Pages 4 and 5 are the unit test, Form A. Pages 6 and 7 are Form B: the same questions in the same order with different numbers, for a retake, a make-up or a second seating. Each form has 12 questions, one point each, and a Score line on its first page.
Give the pre-check on the first day of the unit and see who can trade a ten for 10 ones. Do the review the day before the test, keeping base-ten blocks out. On the number line, blocks and checking questions, give the point for the right answer with the work shown. The keys show one way to break a number apart (27 as 20 and 7); any way that works is right, such as taking 4 to get to 60 and then 23. Question 12 (estimate to check) is taught in 2nd grade in some states: leave it out if your class does not learn it and score out of 11. The answer keys name each question's skill, so a missed question points to the lesson to reteach.
Use the review as practice before a test at school, or Form B as a check after the unit. Ask your child to check a subtraction by adding the answer to the number taken away.
This pack supports the following Common Core State Standards for Mathematics:
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A unit test for subtracting within 100 in 2nd grade: a one-page pre-check, a two-page review, and the unit test in two forms (A and B).
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