Level 3
The cost of 6 files and 10 markers is $40. What is the cost of 9 files and 15 markers?
3 m
Level 3
Adrian had 3 coins and Alex had 6 coins. Their coins consisted of 20¢ coins and 50¢ coins. When all their 50¢ coins were exchanged for 20¢ coins, they had a total of 15 coins. How many 20¢ coins did they have at first?
4 m
Level 1
How many dragonflies are there? Write in numerals.
1 m
Level 1
Count and write in numerals.
1 m
Level 1
In 389, the digit '8' is in the          place.
1 m