Primary school answer: 1x2x3= 1+2+3.
Middle school answer: (-1) x (-2) x (-3) =-1-2-3.
2. There are two numbers hidden in the figure below, one of which is twice as large as the other, and the sum of the two numbers is 10743. What are these two numbers?
57 1358 16238
Primary school: and times the problem: one times the amount = and times the sum. 10743 ÷ (2+1) = 3581,and another number: 358 1×2=7 162.
Middle school: If the smaller number is X, the larger number is 2x.3x = 10743, x = 358 1, 2x = 7 162.