=4×8× 125×25

=(4×25)×(8× 125)

= 100× 1000

= 100000 9048÷26

=(2600+2600+2600+ 1248)÷26

=2600÷26+2600÷26+2600÷26+ 1248÷26

= 100+ 100+ 100+48

=348

288 1÷ 43

=( 1290+ 159 1)÷ 43

= 1290÷43+ 159 1÷43

=30+37 =67 3.2×42.3×3.75- 12.5×0.423× 16

=3.2×42.3×3.75- 1.25×42.3× 1.6

=42.3×(3.2×3.75- 1.25× 1.6)

=42.3×(4×0.8×3.75- 1.25×4×0.4)

=42.3×(4×0.4×2×3.75- 1.25×4×0.4)

= 42.3×(4x 0.4x 7.5- 1.25 x4 0.4)

=42.3×[4×0.4×(7.5- 1.25)]

=42.3×[4×0.4×6.25]

=42.3×(4×2.5)

=423

1.8+ 18÷ 1.5-0.5×0.3

= 1.8+ 12-0. 15

= 13.8-0. 15

= 13.65

6.5×8+3.5×8-47

= 52+28-47 = 80-47 = 33 (80-9.8) × 2/5- 1.32

=70.2X2/5- 1.32

=28.08- 1.32

=26.76

8×7 4÷[ 1÷(3.2-2.95)]

=8×4/7÷[ 1÷0.25]

=8×4/7÷4

=8/7

2700×(506-499)÷900

=2700×7÷900

= 18900÷900

=2 1

33.02-( 148.4-90.85)÷2.5

=33.02-57.55÷2.5

=33.02-23.02

= 10

( 1÷ 1- 1)÷5. 1

=( 1- 1)÷5. 1

=0÷5. 1

=0

18. 1+(3-0.299÷0.23)× 1

= 18. 1+ 1.7× 1

= 18. 1+ 1.7

= 19.8 Finally, I wish you progress in your study! ! !