490  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 150 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 950 cents. How many 7-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1650 cents. How many 7-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1490 cents. How many 8-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1420 cents. How many 4-cent stamps are there?



There are 260 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1560 cents. How many 7-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 820 cents. How many 3-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 920 cents. How many 5-cent stamps are there?



오늘 4원짜리 5원짜리 우표 총 250 장을 사고, 1110 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 190 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1280 cents. How many 7-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1020 cents. How many 6-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

490    100 120 130 130 130 ( 610 )   90 100 140 140 130 ( 600 )   [[ 1210 ]]