🎯 Multiplication Tricks & Shortcuts
Learn these clever patterns and your brain will do multiplication faster than a calculator — with no memorisation needed.
The 9s Finger Trick
Works for 9 × 1 through 9 × 10
- Hold both hands out flat, fingers spread.
- To calculate 9 × N, bend down the Nth finger from the left.
- Count fingers to the left of the bent finger → that's the tens digit.
- Count fingers to the right of the bent finger → that's the ones digit.
9 × 3
Bend 3rd finger
2 left, 7 right → 27
9 × 7
Bend 7th finger
6 left, 3 right → 63
9 × 9
Bend 9th finger
8 left, 1 right → 81
The Doubling Strategy (2×, 4×, 8×)
Build on easy doubles to multiply by 4 and 8
7 × 2 = just double 7 = 14
7 × 4 → double to 14 → double to 28
7 × 8 → 14 → 28 → 56
The 11s Repeat Trick
For 11 × 1 through 11 × 9
Multiplying a single digit by 11? Just write the digit twice!
11 × 3
= 33
11 × 4
= 44
11 × 5
= 55
11 × 6
= 66
11 × 7
= 77
The 5s Pattern
A different shortcut for even vs odd multipliers
Even × 5 → Halve, add zero
8 × 5: half of 8 = 4, add zero → 40
12 × 5: half of 12 = 6, add zero → 60
Odd × 5 → Round up, halve, add 5
7 × 5: next even=8, half=4, put 5 → 35
9 × 5: next even=10, half=5, put 5 → 45
Now Practice!
Use these tricks on real problems. Try to answer before you write anything down.
Curriculum Standards & Learning Objectives
This worksheet topic strictly aligns with global mathematics curricula. Review the detailed learning outcomes and standard identifiers for Two-Digit by One-Digit Multiplication.
US Common Core
4.NBT.B.5
Multiply a whole number of up to four digits by a one-digit number
CBSE (India)
Grade 4
Two-digit multiplication
UK National Curriculum
Year 4
Multiply two-digit by one-digit
IGCSE
Foundation
Multi-digit multiplication
Singapore Math
Primary 4
Two-digit multiplication
Australian Curriculum
ACMNA075
Develop efficient strategies
IB PYP
Year 4
Multi-digit multiplication
Canadian Curriculum
Grade 4
Two-digit multiplication
New Zealand
Level 3
Advanced multiplication
UAE
Grade 4
Two-digit multiplication
Saudi Arabia
Grade 4
Multi-digit multiplication
ICSE (India)
Class 4
Two-digit multiplication
State Boards (India)
Class 4
Two-digit multiplication
NCERT (India)
Class 4
Two-digit multiplication
All other curricula (21-50)
Grade 4-5 equivalent
Two-digit multiplication