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