1st Grade Doubles Plus 1 Quizzes

By Grade 1, most students know their doubles within 10 — build on that directly. Present a near-doubles problem like 4+5 and ask: "Which double is hiding in here?" Once students identify 4+4, the leap to 4+5 is just one more. Practice this identification step explicitly before moving to fluency drills, because students who skip it tend to revert to counting on their fingers when problems get harder.

Start with anchor-and-extend problems: give students the double (7+7=14) and ask them to solve 7+8 using it. Then flip it — give the near-doubles problem and ask them to write the anchor double first. Once that reasoning is solid, timed mixed-fact practice (doubles and near-doubles together) builds the automaticity that Grade 1 standards expect.

Two errors come up most often. First, students add 1 to the sum instead of recognizing it's already included: they compute 5+5=10, then write 5+6=11 correctly, but on the next problem do 6+7 as 6+6=12+1=13+1=14. Second, students who haven't fully automated their doubles will stall on the anchor fact, which defeats the purpose of the strategy. If you see either pattern, the fix is more doubles practice before more near-doubles practice.

Assign the quiz as a digital Wayground quiz for immediate, self-paced practice — results come back to you without any grading on your end. If you're doing a paper station or sending work home, download the printable PDF; the included answer key makes it easy for students to self-check or for you to review quickly. For students who need it, the Wayground for Teachers app lets you scan paper submissions and grade them without re-entering anything manually.

Yes. Common Core expects first graders to add within 20 using strategies such as making ten and using the relationship between known and unknown facts — doubles plus 1 is a direct application of that second strategy. The standard specifically calls for students to demonstrate understanding of why the strategy works, not just produce correct answers. By the end of Grade 1, students are expected to have these facts internalized well enough to use them without stopping to reconstruct the reasoning each time.

For students still shaky on their anchor doubles, use Wayground's reduced answer choices so they're choosing between two or three options rather than recalling from scratch — that scaffolding keeps them practicing the strategy without getting stuck on retrieval. For students who are ready to move faster, the same quiz can be assigned without accommodations, and you can layer in a time challenge. Wayground applies these settings per student, so the rest of the class sees the default version without any indication that accommodations are in place.