Instruction

1

Decompose any two-digit

**number**into components, highlighting the number of units. Among the 96 number of units — 6. Therefore, we can write 96 = 90 + 6.2

Erect in

**the square**the first number: 90 * 90 = 8100.3

Do likewise with the second

**number**m: 6 * 6 = 364

Multiply the number between them and double the result: 90 * 6 * 2 = 540 * 2 = 1080.

5

Add the results of the second, third and fourth steps: 8100 + 36 + 1080 = 9216. This is the result of raising in

**the square**of the number 96. After some training you will be able to quickly take steps in the mind, surprising parents and classmates. Until I mastered it, record the results of each step to avoid confusion.6

For training lift in

**the square****the number is**74 check yourself on the calculator. The sequence of actions: 74 = 70 + 4, 70 * 70 = 4900, 4 * 4 = 16, 70 * 4 * 2 = 560, 4900 + 16 + 560 = 5476.7

Raise to the second power

**of the number**81. Your actions: 81 = 80 + 1, 80 * 80 = 6400, 1 * 1 = 1, 80 * 1 * 2 = 160, 6400 + 1 + 160 = 6561.8

Remember special a method of construction in

**square**two digit numbers ending in the digit 5. Highlight the number of tens in 75 of their 7 pieces.9

Multiply the number of tens to the next figure of

**the number**of CMV series: 7 * 8 = 56.10

Assign the right

**number**25: 5625 — the result of raising in**the square**of the number 75.11

For training lift in the second degree

**the number**95. It ends in the digit 5, so the sequence of actions: 9 * 10 = 90, 9025 — result.12

Learn how to build in

**the square**of a negative number: -95 in**the square**e = 9025, as in the eleventh step. Similarly -74 in**the square**e = 5476, as in the sixth step. This is because when multiplying two negative numbers always get a positive**number**: -95 * -95 = 9025. Therefore, in the construction in the**square**can just not pay attention to the minus sign.Useful advice

To exercise was not boring, call on the help of a friend. He writes two-digit number, and you — the result of the construction of the number in the square. Then switch places.