3.6×2.7+18×0.56-1.8×10%÷l0%

3.6×2.7+18×0.56-1.8×10%÷l0%


3.6×2.7+18×0.56-1.8×10%÷l0%,=(1.8×2)×2.7+1.8×5.6-1.8×(10%÷l0%),=1.8×(2×2.7)+1.8×5.6-1.8,=1.8×(5.4+5.6-1),=1.8×10,=18.



Calculation: 3.6x2.7 + 18x0.56-1.8
Simple calculation


3.6=0.2*1.8
2.7=0.3*9
So 3.6 * 2.7 = 0.2 * 18 * 0.3 * 9 = 1.8 * 18 * 0.3
18*0.56=1.8*5.6
So the original formula is 1.8 * 18 * 0.3 + 1.8 * 5.6-1.8
=1.8*(18*0.3+5.6-1)
=1.8*(5.4+5.6-1)
=18



7 times of a number is 10 more than 56. Find the number


(56+10)÷7=66/7
Let this number be X
7x=56+10
x=66÷7
x=66/7