Mental Addition
Mental Subtraction
Addition-
- Complete the Whole
- Split
- Decompose
Balancing-
- Table for 2-Digit numbers
- Table for 3-Digit numbers
Digit Sum-
- Verification
- Design with Digit Sum
Multiplication of numbers ending 1
Multiplication of numbers starting 1
Multiplication by 9 with 2 and 3-Digit numbers
Multiplication by 1 Digit with # Digits
Dodging Method
Division by 9
Multiplication by 11
Multiplication by 111
Special Multiplication-
- Units place digits sum 10
- Units place digits same
Doubling-
- Multiplication by 4, 8, 16
- Division by 5, 50, 25, 125
Halving-
- Division by 4, 8, 16
- Multiplication by 5, 50, 25, 125
Subtraction-
- All From 9 Last From 10
Subtraction – General Method
Multiplication – General Method-
- Vertically and Crosswise
Addition – General Method-
- Columnar
Table of 12 – 19 (Mentally)