anthonybess141 anthonybess141
  • 21-10-2017
  • Mathematics
contestada

explain how to find 40 multiply by 50 using mental math.

Respuesta :

Eveboardman Eveboardman
  • 21-10-2017
Take 4 and multiply it by 5 (which you should be able to do in your head) and then add the two zeros back in so:
4•5= 20
20+0+0=
2000
Answer Link

Otras preguntas

can someone help me describe this pic????
what is d + 3 = 2(9 - d)
Did all historians view the past in the same way
If a recipe calls for 8 pounds of trimmed celery, which has a 75 percent yeild,how many pounds of untrimmed celeray are needed
Which person worked for human rights with the United Nations? A) Rosa Parks B) Eleanor Roosevelt C) Susan B. Anthony D) Martha Washington
Any activity that does not add value to the good or service in the eyes of the consumer is ________.
If a person exhibits behavior that is different from what most people do, that person's behavior is said to be _____.
Tracy company, a manufacturer of air conditioners, sold 100 units to thomas company on november 17, 2013. the units have a list price of $500 each, but thomas w
State the value of m and the value of b! A. F(x):m= , b= B. G(x): m= , b = C. H(x): m = , b=
although the story of Beowulf is set in Scandinavia what language was it written in