1) △ + 7 = 10  a) △ = 3 b) △ = 7 c) △ = 2 d) △ = 4 2) 80 - ▭ = 50 a) ▭ = 40 b) ▭ = 30 c) ▭ = 20 d) ▭ = 60 3) ⚽ + ⚽ = $20 a) ⚽ = $15 b) ⚽ = $5 c) ⚽ = $10 d) ⚽ = $13 4) ⛤ - 15 = 4 a) ⛤ = 11 b) ⛤ = 20 c) ⛤ = 21 d) ⛤ = 19 5) ◻ + △ = 20 a) ◻ = 10 △ = 10 b) ◻ = 15 △ = 5 c) ◻ = 12 △ = 7 d) ◻ = 16 △ = 3 6) Use symbols to represent: 12 + 12 = 24 a) ◯ + ⏥ = 24 b) ⏥ + ⛅ = 24 c) ◯ + ◯ = 24 d) ❓ + ❌ = 24

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