. 5×8 = 3.6×0.4 = 39.68×0 = 47.6× 1 = 4÷0.5 = 12÷0.06 = 12÷ 1.2 = 3÷30 = 0. 1 5× 7 = 3.2× 6+3.2× 4 = 2.5× 4× 0.36 = 0.2+0.8×12. The vertical calculation is 8.08-2.68 = 5.546+29.38 = 65438+. Vertical calculation (number with one decimal place) 0.43× 0.29 ≈ 52.6× 0.23 ≈ 4.58× 0.37 ≈ 4.3× 8.14 ≈ 27.6× 0.45 ≈ 27.6× 0.4520. Vertical calculation (number with three decimal places) 2.5÷0.7= 2.5÷0.7= 3.25×9.04= 6. Vertical calculation (quotient expressed by cyclic decimal) 36.8 ÷16 ≈/kloc-0.1≈. The calculation outside the formula is (2.65+2.77) ÷ (1.98-0.98) = 3.7× 91.6+6.3× 91.6 = 0.45×12×. .8 = 65438 Calculate the following problem 5.12+2.54+4.88 =12.5×17.8× 0.8 = 9.9× 2.5 = 9.4× 5.8+10.6. kloc-0/ = 0.25×3.2×655 12.5×8.7= 3.7×9 1.6+6.3×9 1.6= 16.84÷40÷0.25= 12.5×0.4×2.5×8= 9.5× 10 1= 4.2×7.8+2.2×4.2= 2.55×7. 1+2.45×7. 1=