First Grade · Math · week 4

Doubles plus one

Use a known doubles fact to solve a near-double addition problem.

A near-double is one hop away from a doubles fact. 5 + 6 is just like 5 + 5, but with one extra. Since 5 + 5 = 10, then 5 + 6 = 11 -- one more.

Look for the smaller number doubled hiding inside the problem, then add one more to get your answer.

📋 For the teacher
Teach it (10–15 min):
  • Keep last week is doubles facts warm -- this trick only works if the double is automatic.
  • Say the two steps out loud every time: "the double, then one more."
  • Show it with objects: build the double, then add one single extra object.
  • If your child mixes it up, ask "which two numbers are right next to each other?" to spot the near-double.
Talk about it:
  • What is the "hiding double" inside 6 + 7?
  • Why does knowing 8 + 8 help with 8 + 9?
  • How is a near-double different from a doubles fact?

Mastery looks like: They spot a near-double, name the hiding doubles fact, and add one to reach the answer.

Common stumbles: Adding one to the wrong number in the double; not recognizing when two numbers are neighbors, like 6 and 7.

See it visually

Interactive, spoken-aloud tools that show this idea in motion.

AdditionSee groups combine — with counters, blocks, and the number line.try →
Homework for this lessonType it, write it with a stylus, or print it for pencil & paper.open →
Records attendance + 15 min of Math for this learner.
← Back to todayAll coursesYear planner