1. x5 • x7 = 2. 45 • 42 = 3. a4 • a6 = 4. 152 • 154 = 5. p63 • p37 = 6. 15s • 15t = 7. y10 ÷ y5 = 8. 310 ÷ 32 = 9. n16 ÷ n8 = 10. 89 ÷ 86 =