Estimate the answers to these questions.

a) 18 x 12
b) 57 x 46
c) 98 x 105
d) 22/5.3
e) 901/33
f) 1007/498

a) 18 x 12 = 216

b) 57 x 46 = 2622
c) 98 x 105 = 10290
d) 22/5.3 ≈ 4.15
e) 901/33 ≈ 27.27
f) 1007/498 ≈ 2.02