Add & Subtract Sprint: Quick Sums, Strong Minds
Add & Subtract Sprint is a brisk mental-arithmetic game designed for Class 2. The screen shows a simple sum such as 8 + 5 or 14 − 6. The student works out the answer in their head and types it in. Because every question stays within 20, children practise exactly the number facts they meet in daily life — counting coins, sharing sweets, and keeping score in games.
The Mathematical Idea
Fluency with addition and subtraction within 20 is the workhorse of primary mathematics. Knowing that 7 + 8 = 15 instantly, rather than counting on fingers each time, frees a child’s attention for harder thinking later. The game mixes addition and subtraction so learners must read the operation sign carefully and switch between the two inverse operations.
How to Play
When the game loads, a sum appears in the card. Type your answer in the box and press Check (or hit Enter). A correct answer turns the message green, adds a point, and brings the next sum. An incorrect answer turns it red so you can rethink and try again.
A Worked Example
Suppose the screen shows 13 − 7. You can count back seven from thirteen, or use the fact that 7 + 6 = 13 to see straight away that the answer is 6. Type 6 and press Check. Using addition to solve subtraction like this is a powerful strategy the game quietly reinforces.
Strategy Tips
For sums that cross ten, encourage the “make ten” strategy: to add 8 + 5, first make ten (8 + 2 = 10) then add the remaining 3 to get 13. For subtraction, counting up from the smaller number is often easier than counting back. Always read the sign before solving.
Why It Helps Learners
Add & Subtract Sprint builds rapid recall of basic number facts and confidence with both operations. These facts are needed every single day in later mathematics — in column arithmetic, money problems, and word problems — so the fluency gained here pays off across every future class.