Addition Mastery Probe

Katie·

Addition

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At a Glance

SubjectAddition

Original Prompt

Below is a 10‑problem weekly probe: double‑digit + one‑digit vertical addition, with simple 1st‑grade language and 10 short word problems. Use lined or 1‑cm graph paper so the student must align digits vertically. Each item is one point (total 10). Allow 2–3 minutes. Probe — Double‑digit + One‑digit (10 items) 24 5 = __ 38 2 = __ 17 6 = __ 46 3 = __ 59 4 = __ Sam has 22 apples. He gets 3 more. How many now? __ Mia has 41 stickers. She gets 7 more. How many now? __ A jar has 33 marbles. Add 5...

This resource focuses on vertical addition, guiding students on how to solve addition problems with proper alignment of digits. It includes practice problems with single and double digits, as well as word problems that require three-digit addition. Success criteria are provided to evaluate the accuracy and alignment of the answers. The document consists of a worked example to illustrate the concept, practice problems to reinforce learning, and word problems that promote critical thinking in applying addition to real-life scenarios.