Grade 1 math facts
Start with making ten, one-digit addition, and subtraction within ten. Then explore crossing ten and simple two-digit calculations. Use objects or drawings to explain how the numbers combine before expecting instant recall.
Choose a skill to practice
Choose a link below to open the game, then press Start to begin the selected skill. Your practice round uses the same feedback and local progress storage as the main game.
- Number bonds to 10
- One-digit addition
- Subtraction within 10
- Addition with carrying
- Subtraction with borrowing
- Calculate with three numbers
- 2-digit + 1-digit
- 2-digit − 1-digit
An early-number practice example
Show seven counters and ask how many more make ten. Add three, then use the same pair to explain 10 − 7 = 3. Next try 7 + 5: three of the five complete ten, leaving two, so the answer is twelve. A ten-frame, a drawing or small objects can make this step visible before the learner enters an answer in the game.
Watch for counting and crossing-ten errors
Counting the starting number as the first added object can produce an answer one too small. Ask the learner to point to the objects already present, then count only the new objects. Crossing ten may also be difficult if number pairs are unfamiliar. Return to making-ten practice rather than increasing the number size. A correct answer obtained slowly with an understandable method is a useful starting point.
Preparing for Grade 2
These eight skills connect early facts to simple two-digit addition and subtraction. The next grade introduces written columns, carrying and borrowing, so understanding tens and ones matters more than racing through the list. Choose an earlier skill again whenever a learner needs concrete examples. These grade labels follow the source Japanese calculation sequence; use your learner’s readiness and school topics to decide where to begin.