Counting by 5's, 10's, 25's, an 100's
Numbers and Counting, and more...

 1 EASY What comes next: 120, 130, 140, 150, ...

 2 EASY What comes next: 35, 40, 45, 50, ...

 3 EASY What comes next: 200, 300, 400, 500, ...

 4 EASY What comes next: 50, 100, 150, 200, ...

 5 MEDIUM What comes next: 165, 190, 215, 240, ...

 6 MEDIUM Bob is counting by 100s and reaches 470 on his third number. What is his starting number?

 7 MEDIUM Maurice counts by 50s and reaches 550 on his 4th number after the initial number. What was his initial number? 550400450350None of the above

 8 MEDIUM Olivier starts at 1000 and counts down to 0 by 100s. Olivia starts at 0 and counts up to 1000 by 100s. Who will reach their destination first? OlivierOliviaThey will finish at the same timeNeither will reach their destinationsNone of the above

 9 HARD Albus and Belina are playing a game. Albus starts by saying a one-digit number. Belina then says the number five after Albus' number. Albus then says the number five after Belina's number. The two players alternate back and forth until a number greater than 100 is first reached and becomes the winning number. If Albus starts by saying 6, what would be the winning number? Who would say the winning number? 106, said by Albus106, said by Belina101, said by Albus101, said by Belina100, said by Belina

 10 HARD Alexandra counts by 5s, starting at 945. Alexandre counts by 25s, starting at 825. Alexandria counts by 50s, starting at 500. Alexander counts by 100s, starting at 200. Who will count to 1000 first? AlexandraAlexandreAlexandriaAlexanderNone of the above