If the product of a number multiplied by its reciprocal is 2 and 1 / 3, then the reciprocal of the number is ()

If the product of a number multiplied by its reciprocal is 2 and 1 / 3, then the reciprocal of the number is ()

This number is 2 and 1 / 3-1 = 1 and 1 / 3, and the reciprocal of this number is 1 ／ 1 and 1 / 3 = 3 / 4

A simple algorithm of 9 × 72 × 125

9x72x125
=9x(8x9)x125
=9x9x8x125
=(9x9)x(8x125)
=81x1000
=8100

72 * 125 and 92 * 36-16 * 92
Simple algorithm, clear

72×125
=9×（8*125）
=9×1000
=9000
92×36-16*92
=92×（36-16）
=92×20
=920×2
=1840

A simple algorithm of 88 × 201-88

88×201-88=88*(201-1)=80*200=17600

The simple formula of 125 × 7 + 125 is ()
A. 7 + 125 × 1b. This question can't be simplified

125 × 7 + 125 = 125 × (7 + 1) = 125 × 8 = 1000, so C

Put 3.6.9.12.15.18.21.24.27 into 9 cells respectively, so that the three numbers of horizontal and vertical are equal to 45

6 27 9
18 15 12
21 3 24

How much is 25 minus 2 equals 7

25 minus 9 times 2 equals 7

What is 8.95 times 0.25 minus 0.95 times 0.25?
Hurry!

8.95*0.25-0.95*0.25
=(8.95-0.95) * 0.25 (multiplicative Association Law)
=8*0.25
=2

How much is 5 / 6 times 1 / 13 + 1 / 2 times 5 / 13 + 5 / 3 times 1 / 13!

=1/13*(5/6+5/2+5/3)=1/13*[(5+15+10)/6]=1/13*5=5/13

18 plus 80% of a number is exactly equal to 22?

（22-18）÷80%
=4÷0.8
=5