Money
times
Adding
100

Quarter plus a Quarter 

50

100

10X10

100

100

100+100

200

200

dime+quarter

35

200

20x10

30


200

1000+500

1500

300

dime+dime

20

300

100x100

1000

300

300+600

900

400

quarter+ dime+a dime

45

400

700+300

1000