25 math short cuts / Virgilio Y. Prudente
Material type:
- text
- unmediated
- volume
- Twenty five math short cuts
- 513.9
Item type | Current library | Collection | Call number | Status | Barcode | |
---|---|---|---|---|---|---|
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Balingasa Branch Filipiniana Section | Filipiniana | F 513.9 P971t 2014 (Browse shelf(Opens below)) | Available | 124435d |
Addition by creating zeroes
All from 9 and the last from 10 subtraction
Subtraction without borrowing
Multiplying by 2
Doubling and halving together
Multiplying by 9
Diving by 5, 50, 0.5 etc.
Multiplying by 5, 50, 5%, etc.
Dividing by 9
Dividing by 4 and 8
Multiplying by 25, 250, and 125
Dividing by 25, 250, and 125
Squaring numbers ending in 5
Multiplying complementary numbers
Base multiplication : teens and other
Base multiplication : numbers below the base
Base multiplication : one number above and once number below the base
Squaring numbers near 50
Multiplying numbers with the same units
Multiplying numbers ending in 5
Multiplying number when their average is a multiple of 10
Squaring any number
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