Latihan tambahan

从原点出发的移动 = pergerakan dari O 往右的格数写在前面，往上的格数写在后面。 例子：往右 3、往上 5 → (3, 5)。 注意：不要把两个数字加起来，也不要颠倒次序；可以在方格上画出路线，看看停在哪里来检查答案。

a movement from the origin = pergerakan dari O The units right are written first and the units up second. Example: 3 right and 5 up → (3, 5). Watch out: do not add the two numbers together or swap their order; you can draw the route on a grid and see where it stops to check your answer.

从别的点出发 = bermula di titik lain 出发点不是原点时，往右几格就在第一个数字加几，往上几格就在第二个数字加几。 例子：从 (4, 0) 往右 2、往上 2 → (6, 2)。 注意：两个方向要分开算，横向的移动只改第一个数字，竖向的移动只改第二个数字。

starting from another point = bermula di titik lain When the start is not the origin, add the units right to the first number and the units up to the second. Example: from (4, 0), moving 2 right and 2 up → (6, 2). Watch out: work out the two directions separately; a sideways move changes only the first number and an up move changes only the second.

往左滚 = bergolek ke kiri 往左移动时，第一个数字要减去移动的格数，第二个数字不变。 例子：从 (6, 2) 往左 5 → (1, 2)。 注意：往左是减；做完以后可以在方格上从出发点往左数一次，确定停在哪一条格线上。

rolling left = bergolek ke kiri When moving left, subtract the units from the first number; the second number stays the same. Example: from (6, 2), moving 5 left → (1, 2). Watch out: left means subtract; afterwards count left from the starting point on a grid to check which line you stop on.