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 ( 59+ )
Otras preguntas
Find the percent of markup for $40 marked up to $59.75. round to the nearest percent.
In the early days of the united states, communities were idealized as civic republics where citizens
Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gender of any other children. find
Solve the system of equations -7x - 6y = 4 x= -3y + 8
Seventy-year-old isabel's life goals emphasized money and prestige. she is likely to __________.
Austin is creating a rectangular garden. The area of the garden will be 180 square feet, with a perimeter of 54 feet. When Austin gets to the hardware store to
A teacher grades 25 students essays in 4 hours. Assuming he grades at the same speed, how long will it take him to grade 35 essays? What is the constant of this
Which network component connects a device with the transmission media and allows it to send?
T or f kant was a russian moral philosopher who developed the categorical imperative.
Which parts of a compound microscope magnify objects? a convex and a concave lens two convex lenses two concave lenses one concave and two convex lenses?
