3600÷24÷0.4
=3600÷60
=60
15×24
=15x2x12
=30x12
=360
25x24
=25x4x6
=100x6
=600
125×24
=125x8x3
=1000x3
=3000
101×65
=100x65+1x65
=6500+65
=6565
3600÷24÷0.4
=3600÷60
=60
15×24
=15x2x12
=30x12
=360
25x24
=25x4x6
=100x6
=600
125×24
=125x8x3
=1000x3
=3000
101×65
=100x65+1x65
=6500+65
=6565