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Placard outside a shop in Bordeaux advertising subtraction of 20% from the price of the second perfume purchased.
Placard outside a shop in Bordeaux advertising subtraction of 20% from the price of the second perfume purchased.
Vertical Subtraction Method B Step 1
Vertical Subtraction Method B Step 1
The difference is written under the line.
The difference is written under the line.
9 + ... = 5 The required sum (5) is too small.
9 + ... = 5 The required sum (5) is too small.
The Educated Monkey—a tin toy dated 1918, used as a multiplication "calculator". For example: set the monkey's feet to 4 and 9, and get the product—36
The Educated Monkey—a tin toy dated 1918, used as a multiplication "calculator". For example: set the monkey's feet to 4 and 9, and get the product—36—in its hands.