posted by esha on .
justine has 162 red buttons,98 blue buttons,and 284 green buttons. she says she knows she has more than 500 buttons without adding.do you agree? explain.
Yes. Round the numbers to the nearest hundred. Then add them.
160 + 100 = 260
so if the last number is more than 240 we are over 500
thank-you for tour quick reply ,esha
Alex used red, blue, and green buttons for his painting. he used 81 green buttons. he used 20 more green buttons than blue buttons. he used 14 more red buttons than blue buttons. what is the number of red buttons