fer5
fer5
11-12-2015
Mathematics
contestada
break apart the addends to find the sum 18+21
Respuesta :
WorldCitizen
WorldCitizen
11-12-2015
we break apart the first numer:
10+8
the second:
20+1
and add like this:
18+21=10+8 + 20+1
now, we can mix up the order:
18+21=10+8 + 20+1= 10+20 + 8+1
add the parts:
18+21=10+8 + 20+1= 10+20 + 8+1=30+9=39
Answer Link
VER TODAS LAS RESPUESTAS ( 43+ )
Otras preguntas
China's diverse topography and location have resulted in which of the following developments? A. its relative isolation throughout its long history B. its role
How many time zones are in Canada
what do african rock paintings have that european and australian rock paintings don't have? a. shading b. texture c. pattern d. form
water level in a plastic pool changed by -8 gallons each hour after 6 hours,the pool contained 132 gallons.how much water was in the pool originally?
write an equation to represent the relationship "a number decreased by negative 7 is the same thing as 48
an example of density is a. 2.17 centimeters. b. 2.174 liters. c. 2.17 grams per centimeter.
what type of verb is the underlined word in the sentence? the reporter writes daily for the newspaper. a. transitive b. intransitive
Who developed the polio vaccine?
What is a pronoun???
what is necessary for a convection cell to be set up in a fluid? a. thermal gradient b. changes in density c. thermal gradient and changes in density
