John1111112 John1111112

Today at 12:18 PM
Mathematics

Answered

What is 21-3? How can we. Solve this using mental math?

Answer :

madisonmcce madisonmcce

Today at 12:24 PM

21-3=18
Since 20-3=17 add 1 so 21-3=18

Answer Link

Other Questions

What is the solution of 3x + 5 = 2x - 72

in a paragraph describe Darwin's theory of evolution. Please use scientific terminology and give specific examples to support your answer.

Which of the following is not true about density?A Density depends on mass and volume.B. Density describes how tightly packed particles are in an object.C. Dens

I need help now plzzzz

How much interest will be earned in 3 years from $730 placed in savings account at 6.5% simple interest

पसंद के पशु/पक्षी का चित्र

The decimal number for Ninety nine and eighteen is equal to

About FANI Cyclone in Odisha ?

mon Tactor of 20, 28 and 36 is 2(occuring twice).id 36 is 2 x 2 = 4.EXERCISE 3.6(d) 27,63nd the HCF of the following numbers:18, 48(b) 30, 4236, 84(f) 34, 1028

What is meant by gene cloning?

Accelerate definition

Give examples of how climate change can effect the water cycle. How do things that happen in one sphere affect the others?

If you're comparing the size of an arrangement to the space in which it will be displayed, which principle of floral design are you using? A. Dominance B. Balan

3$ is what percent of $12

Helpppppppppppppppp!What is one contributing factor for the election of African Americans in Florida after Reconstruction? Anti-Reconstruction groups were no lo

A man wants to enter an exclusive club, but he doesn’t know the password, so he watches the bouncer to figure it out. A woman comes up and the bouncer says, “12

PLZ HELP GYIIRVGRWWRRWBGRGRG

Gloria has a lunch account in the school cafeteria. The balance, f(x), in her account can be represented by the function f(x) = –1.50x + 40, where x is the numb

Which of the following is a correct definition of conditional probability?

The Burmese python has been released by people who were not prepared to care for them as pets into the Florida Everglades. The pythons are disrupting the natura