24(×)0.3=7.2 24(-)0.3=23.7 24(+)0.3=24.3
24(+)1.5=25.5 24(×)1.5=36 24(-)1.5=22.5
24(÷)0.8=30 24(×)0.8=19.2 24(-)0.8=23.2