Practice Halving and Doubling the Numbers

This interactive worksheet helps students practice halving and doubling numbers — a key mental maths skill that supports faster calculations and number sense. Before generating problems, students can configure:

• Operation: Halve or Double
• Number Type: Odd, Even, or Both
• Digits: 2, 3, 4, or 5-digit numbers

In this worksheet, students must enter the halved or doubled value for each given number. Unlike traditional pen-and-paper methods that proceed from right to left, this worksheet promotes a left-to-right mental strategy — a hallmark of quick arithmetic thinking.

For example:

• To double 768: Split it as 700 + 60 + 8 → Double → 1400 + 120 + 16 = 1536
• To halve 472: Split it as 400 + 70 + 2 → Halve → 200 + 35 + 1 = 236

Students should avoid solving these problems in the traditional right-to-left column method. Instead, they should calculate from left to right, focusing on each place value as they move forward. This left-to-right strategy is widely used by quick maths enthusiasts and mental calculation experts for faster and more accurate results.

In your head, don't try to divide or multiply each digit by 2 separately. Instead, see the number as a whole made of parts — hundreds, tens, and ones — and work with those chunks mentally. This approach builds flexible number sense rather than mechanical calculation.