2 9 4 5 1 7 July 8, 2019 16 32 64 128 2 4 5 x 1 7 9 9 4 5 7 1 2 as a mixed number 7 1 9 2 4 5 m 7 1 9 2 4 5 as a fraction 2 9 1 5 7 phần 9 4 5 Estimate 4 2 5 1 7 9 by rounding to the nearest half 4 2 5 − 1 7 9 ≈