Which of the following equation shows the associative property of addition? Mark all that apply

A

6.5+25=25+6.5

B

15+1=1+2.7

C

(0.75+12) + 2.1=0.75 + (12+2.1)

D

-5.3+0=-5.3

E

23 + (3.1+14) = (23+3.1) + 14

49,000 round to the nearest ten thousand

Leo has 100 coins in his piggy bank. All coins are either nickels, or dimes, or quarters. There are as many nickels as dimes and quarters together. How much money are nickels in Leo's piggy bank worth?

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What number is 100000 more than 702083