100×(-3)×(-5)×0.01
=100×3×5×0.01
=300×5×0.01
=1500×0.01
=15
﹙1/9-1/6-1/18﹚×36
=36×﹙﹣1/9﹚+36×﹙﹣1/6﹚+36×﹙﹣1/18﹚
=﹙﹣4﹚+﹙﹣6﹚+﹙﹣2﹚
=﹣12
﹙1/4-1/2-1/8﹚×128
=128×﹙﹣1/4﹚+128×﹙﹣1/2﹚+128×﹙﹣1/8﹚
=﹙﹣32﹚+﹙﹣64﹚+﹙﹣16﹚
=﹣112
2.25×﹙﹣2.3﹚×3/25
=﹣﹙2.25×2.3×0.12﹚
=﹣0.621
﹙﹣2.1﹚×6.5×﹙﹣3/7﹚
=21/10×13/2×3/7
=117/20
注:如:九分之一=1/9