6 class. Calculate in the most convenient way. 1)-1.25 x (-3.47) x (-8) = 2)-0.001 x (-54.8) x 50 x (-2) = 3)9/16 x 11/35 x (-32) x (-70) = 4)4,8 x (-2 1/6) x (-5/24) x (-6/13) = Please help! The photo shows as it looks in the textbook.

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1)-1.25× (-8) × (-3.47) = 10× (-3.47) =-34.7 2) 50×(-2) × (-0.001) × (-54.8) =-100× (-0.001) × (-54.8) = 0.1× (-54.8) =-5.48 3) 9/16×(-32) × (-70) ×11/35 = 9×(-2) × (-70) ×11/35 = (-18×70×11)/35 =-18×2×11 = =2×11×(-18)=22×(-18) =-396 4)-21/6× (-6)/13×4.8× (-5/24) = 21/13×24/5×(-5/24) = (21×24×(-5)) / (13×5×24) = =-21/13 It seems so)))))))))))))))
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Answer add