# Christmas balls

On the Christmas tree we put 21 Christmas balls of two colors. Eight of them were blue. How many Christmas balls was red?

Result

X =  13

#### Solution:

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

## Next similar examples:

1. Snow balls
2. On the tree
15 squids and sparrows sat on the tree. Sparrows were 8 less than squids. How many sparrows were sitting at the tree?
3. Trees
In the orchard, 38 apple trees and 20 pear trees grew. How many trees there grow?
4. Flowers & garden
The garden grows 5 white flowers. Yellow 7 more than white. Blue 4 fewer than yellow. How many flowers grow together in the garden?
5. Aircrafts
James make the 21 paper aircrafts. It is 9 pieces more than make Matthew. How many paper aircrafts maked Matthew?
6. Trickster 2
Figliarko had in wallet a few cents. One friend returned 4 cents and another friedn 7 cents. Now he has 51 cents in the wallet. How many cents previously had in his wallet?
7. Toy Cars
Peter has 29 toy cars, Zdenko has 8 toy cars less. How many toy cars has Zdenko?
8. Floods
After the floods that hit a school, parents help repair the damage. My father worked at the school 50 hours, my mom 5 hours less. How many hours worked mother? How many hours worked my parents together?
John decorated 29 gingerbread and Annie 8 more. How many gingerbread decorated Annie?
10. Free postage
Dad found out that when ordering goods over the Internet and will pay more than 60 euros do not pay a fee for postal delivery. He chose goods for 10, 20 and 15 euros. How many euros do we have pay for goods for free postage?
11. Rolls
Mom every day buys 6 rolls. On Friday buys 2 times as much. How many rolls buys on Friday?
12. Seals
There are 10 seals on floe. a) On Wednesday arrived a six and departed 2 seals. How many seals are on the floe? b) on Thursday arrived a 5 seals more then departed. How many seals are on the floe?