A simple method of multiplying zero four by 99 and subtracting zero four
0.4*100-0.8
Can 2.42 △ three quarters + 4.58 × one and one third - 4 △ 3 be easily calculated? It needs a specific process,
2.42 divided by three quarters + 4.58 times one and one third - 4 divided by three
=2.42*4/3+4.58*4/3-4/3
=4/3*(2.42+4.58-1)
=4/3*6
=8