258  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 150 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 670 cents. How many 5-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1020 cents. How many 3-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 830 cents. How many 4-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1830 cents. How many 8-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1140 cents. How many 3-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1670 cents. How many 7-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 710 cents. How many 3-cent stamps are there?



오늘 3원짜리 9원짜리 우표 총 250 장을 사고, 1350 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 160 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1180 cents. How many 8-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1330 cents. How many 7-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

258    70 100 110 150 100 ( 530 )   110 120 150 110 150 ( 640 )   [[ 1170 ]]