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BEGINNERMental Math
Multiply by 25 Quickly
Multiply any number by 25 using division by 4
SSCIBPS
25 = 100 ÷ 4, so multiply by 100 and divide by 4
Formula
N × 25 = N × 100 ÷ 4 = N ÷ 4 × 100How It Works
0
Divide the number by 4
1
Multiply by 100 (add two zeros)
Examples
📝 48 × 25 = 48 ÷ 4 × 100 = 12 × 100 = 1200
📝 36 × 25 = 36 ÷ 4 × 100 = 9 × 100 = 900
Pro Tips
💡 Similarly, × 50 = ÷ 2 × 100, and × 125 = ÷ 8 × 1000
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