- What is the value of 117 ones plus 2 hundred plus 18 tens?
- Sam can read 8 pages is 4 days and Tom can read 9 pages in 18 days. How many days does it take for them to read 100 pages together?
- Alan scored 100, 84, 92, and 120 on different tests. What is Yi’s average?
- Twelve maps are equal to 5 saps. Nine caps are equal to 8 saps. How many caps are equal to 18 maps?
- Prime numbers are only divisible by 1 and the number itself. Which of these is prime?
18 19 20 21 23 25 27 29 89 91 43 41 49