20100398160008 20100398160008
  • 30-04-2024
  • Mathematics
contestada

1. Add using mental math.

a) 4/9 + 3/9

b) 1/2 + 3/8 - 7/8

c) 5 1/12 + 3 5/12

d) 7 1/4 + 9 3/8 = 5/1

16 1/8

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