Mystery Bureau › Kindergarten standards › K.OA.A.2
📘 Common Core · K.OA.A.2 · Kindergarten
K.OA.A.2 is the standard that turns counting into arithmetic. The ceiling of 10 is low on purpose — the difficulty is meant to sit in understanding what the problem is asking, not in the size of the numbers. The explicit mention of objects and drawings matters too: at this age, representing the problem is part of solving it, not a crutch to be removed early.
Quoted verbatim from the Common Core State Standards for Mathematics. Nothing here is paraphrased.
| K.OA.A.2 | Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem. |
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In plain English: Solve small addition and subtraction word problems within 10, using objects or drawings if that helps.
Each one runs in the browser with no account and nothing stored. Five questions apiece.
Real output from the activities above — not written for this page, drawn from the same pools a student gets. The numbers are rebuilt on every attempt.
| 4 + 5 = ? | 9 |
| 2 + 2 = ? | 4 |
| 2 + 3 = ? | 5 |
| 10 − 1 = ? | 9 |
| 7 − 2 = ? | 5 |
| 5 − 2 = ? | 3 |
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