KS2 Primary Maths Age 13-17 - Calculations: Word Problems - Explained

The video tutorial explains how to solve a problem involving a stack of 20 identical boxes that is 140 centimeters tall. Stefan removes three boxes from the stack, and the task is to determine the new height of the stack. The solution involves calculating the height of one box by dividing the total height by the number of boxes, then subtracting the height of the removed boxes from the original stack height. The final answer is 119 centimeters, with marks awarded for both the correct answer and the method used.

What is the height of the stack of boxes before any are removed?

How many boxes does Stefan take off the top of the stack?

What is the height of one box?

How do you calculate the new height of the stack after removing boxes?

What is the final height of the stack after Stefan removes the boxes?