MrsCintron75 MrsCintron75
  • 06-09-2016
  • Mathematics
contestada

explain how you could add 678 + 303 using mental math

Respuesta :

Аноним Аноним
  • 06-09-2016
okay well I do it like this. 3+8=11. I put a 1 down and carry the other. so I do 7+0+1=8 so now I have 81, and last I do 6+3=9. so the answer would be 981.


Have a nice day!
Answer Link
Ironsoap Ironsoap
  • 06-09-2016
add the hundreds first then the tenths then the units. so add 600 +300 which is 900 then 70 +0 which is 70 then 8+3 which is 11 then add them all up which is 981.
Answer Link

Otras preguntas

4 7/12 + 2 1/12 what is the estimate answer
To be useful, a scientific name has to refer to a. all living species b.all living & extinct species c.all species in one habitat d.a single species
how do you graph 7x +2y =-10
Why were Europeans in conflict over the Caribbean regions?
the ratio 8.4 to 4.4
what compromise ended the third crusade?
what is the opposite of 3.82
how to say like a boss in spanish
Which of the following resources did the colonies export to Great Britain? A. furniture B. tobacco C. iron D. sugar
I am writing a poem to send off to the 2015 K1 poetry contest. Please tell be what you think and any adjustments I need to make. Change Bullying hurts, don't yo