Question

Solve each equation mentally.
16. 9b = 36 17. 11w = 66 18. 80 = 10d


19. 45 ÷ m = 5 20. g ÷ 4 = 12 21. 26 ÷ k = 2

Answer 1

16. 4 (9*4=36) 
17. 6 (6*11=66)
18. 8 (10*8=80)
19. 9 (9*5=45)
20. 48 (4*12=48)
21. 13 (13*2=26)

Answer 2

16.4
17.6
18.8
19.9
20.48
21.13