STEP 1: Draw a bar and label it with the total amount - in this case £20. Roughly estimate where 75% would be and draw a vertical line. Shade the larger area in and label this with a question mark.

The doubling square trick is a simple mathematical shortcut designed for class 6 to 10 students to make multiplication easier ...

Click to see a step-by-step guide. STEP 1: Draw a bar: if the whole bar was 100%, estimate where 40% from the right would be and draw a vertical line. Label the left-hand part £12 and shade it in. Now ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Chip Stapleton is a Series 7 and Series 66 license holder, CFA Level 1 exam holder, and ...

Years ago, no math education was complete without understanding how to compute a square root. Today, you are probably just ...