Work through the levels in order. Type your answer and press Check — open the worked solution if you get stuck. Answers like -6, 3/4 or 0.25 are typed exactly as shown. A ⭐ Bonus Challenge at the end is extra credit — skip it if the rest was hard work.
Level 1 · Warm-up
1 ▲ + 15 = 40 − 5. What is ▲?
Show worked solution
Right side 35; 35 − 15 = 20.
2 18 − 2 × 5 = ?
Show worked solution
× first: 10. Then 18 − 10 = 8.
3 (18 − 2) × 5 = ?
Show worked solution
Brackets first: 16 × 5 = 80.
Level 2 · Core
4 54 − ▲ = 19 + 16. What is ▲?
Show worked solution
Right side 35; 54 − 35 = 19.
5 Tree: 75 splits into 29 and A; A splits into B and 18. What is B?
Show worked solution
A = 75 − 29 = 46; B = 46 − 18 = 28.
6 40 ÷ 4 + 6 × 3 = ?
Show worked solution
10 + 18 = 28.
Level 3 · Challenge
7 I have 500 points, buy 4 shields at 85 each and a sword, and have 60 left. Sword cost?
Show worked solution
500 − 340 = 160; sword = 160 − 60 = 100.
8 Numbers 1–5 in a cross, both lines add to 10. What is the middle number?
Show worked solution
Lines total 20, numbers total 15 → middle counted twice = 5.
9 ▲ × 3 = 100 − 28. What is ▲?
Show worked solution
Right side 72; 72 ÷ 3 = 24.