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SMALL QUESTIONS. USEFUL ANSWERS. A LITTLE MORE KNOW-HOW.

COLLECTIONS

A little know-how goes a long way.

Browse practical guides for small tasks, clear calculations and everyday questions.

01

Start with the task in front of you

Choose a guide below for a focused explanation. Each one puts the key idea first, then walks through the details and the mistakes that are easy to make.

1 crore is equal to how many lakhs?

1 crore equals 100 lakhs. See the arithmetic and a simple way to convert either direction.

1 crore is equal to how many millions?

One crore is 10 million. Translate between Indian and international number names.

1 decade is equal to how many years?

A decade contains 10 years. Convert decades, years and centuries with one simple rule.

1 million is equal to how many crore?

1 million is 0.1 crore, or 10 lakhs. Here is how the three scales fit together.

500 ml is equal to how many cups?

500 ml is about 2.11 US customary cups, or exactly 2 metric cups. Choose the cup your recipe uses.

Ginger and sesame green beans

A quick pan of crisp green beans with ginger, garlic and a little soy sauce.

Easy oven-baked beans

Start with cooked canned beans for a small dish of tomato and mustard baked beans.

Banana milk

Blend one ripe banana with milk for a quick, lightly sweet drink.

Beans and greens

Canned beans and a handful of greens make a flexible, one-pan meal.

How to clean strawberries

Rinse strawberries under running water and dry them gently before preparing or eating.

How to convert degrees to radians

Multiply degrees by π/180, then simplify.

How to draw a book

Build a simple book drawing from a rectangle, a spine and a few parallel page lines.

How to draw a snowflake

Start with six arms, then repeat a small branch pattern around the center.

How to find density

Divide mass by volume and keep track of the units.

How to find perimeter

Add the lengths around the outside of a shape.

How to find the perimeter of a triangle

Add all three sides, then check that your units match.

How to find the range of a data set

For a set of numerical observations, subtract the smallest value from the largest.

How to find relative frequency

Divide a category’s count by the total number of observations.

How to find the slope of a line

Divide the change in y by the change in x, keeping the point order consistent.

How to find the circumference of a circle

Use 2πr for radius or πd for diameter.

How to find the midpoint

Average the x-coordinates and the y-coordinates separately.

How to find the volume of a cone

Use one third of the base area multiplied by the perpendicular height.

How to find the volume of a rectangular prism

Multiply length, width and height, all measured in the same unit.

How to fold a fitted sheet

Tuck the corners together, flatten the elastic edges and turn the sheet into a manageable rectangle.

How to organize bottles in the kitchen

Group bottles by use, make labels visible and give the awkward shapes a stable home.

How to take a screenshot on an HP laptop

On Windows, use the Snipping Tool to capture a selected area and save just what you need.

Storing and reheating leftovers

Use small containers, refrigerate promptly and reheat leftovers thoroughly.

Lemon and herb rice

A simple pot of rice finished with lemon, parsley and olive oil.