Doubles plus one
JamWise Education TeamยทUpdated March 2026
Definition
A strategy for adding. If you know 7 + 7 = 14, then 7 + 8 = 15.
Learning context
In 2nd grade math, students encounter "doubles plus one" as part of building numerical and spatial reasoning skills. At the early elementary level, learners develop the ability to connect abstract mathematical concepts to concrete, everyday situations. Understanding this term helps students communicate their mathematical thinking with precision and builds a foundation for more advanced problem-solving in later grades.
Why music helps students learn vocabulary
Research consistently shows that pairing vocabulary instruction with music improves both recall and long-term retention. When students hear a term like "doubles plus one" embedded in a memorable melody, their brains form stronger associative connections between the word, its meaning, and the emotional context of the song.
JamWise leverages this science by generating curriculum-aligned songs for every K-8 topic. Rather than drilling definitions from a word list, students encounter terms naturally within lyrics, absorbing meaning through context and repetition. Teachers report that students who learn vocabulary through JamWise jams retain terms significantly longer than those using traditional flashcard methods.
Related vocabulary
Regroup
Trading 10 ones for 1 ten, or 10 tens for 1 hundred, when adding or subtracting.
Repeated addition
Adding the same number over and over. Like 3 + 3 + 3 + 3.
Doubles
Adding a number to itself. Like 4 + 4.
Near doubles
Adding numbers that are one apart, like 6 + 7. Think 6 + 6 + 1.
Count on
Adding by counting up from a number.
Make ten
A strategy to add by first making a group of ten. 8 + 5 = 8 + 2 + 3 = 10 + 3 = 13.
Multiply
To add a number to itself a certain number of times. 4 x 3 means adding four 3 times: 4 + 4 + 4 = 12.
Open number line
A blank number line you use to show jumps for adding or subtracting.