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.

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

To determine whether Justine has more than 500 buttons without actually adding them up, we can add the quantities of the different colored buttons she owns. If the total exceeds 500, we can conclude that she indeed has more than 500 buttons.

Justine has:
162 red buttons
98 blue buttons
284 green buttons

To find out if Justine has more than 500 buttons:

1. Add the quantities of each color:
162 (red) + 98 (blue) + 284 (green) = 544

The total number of buttons that Justine has is 544. Since this number is greater than 500, we can agree with Justine's statement that she has more than 500 buttons without actually counting each individual button.

160 + 100 = 260

so if the last number is more than 240 we are over 500