Numbers up to 10 : Level 1

Numbers up to 10 1

IB MathStatistics & Probability

1) What is the sum of the first 100 odd positive integers?2) Sylvia owes Jon $1000. She pays him $1 on January 1st, $2 on January 2nd, and in general pays him dollars on January On which day will her total payments have exceeded her debt?3) On January 1, Jon puts one marble in a bowl. The next day, Jon adds three more marbles in the bowl. The next day, he adds five more marbles. Continuing in this pattern, Jon adds an odd number of marbles to his bowl each day, adding two more marbles than he added the day before. After he has added marbles on January 31st, how many total marbles has he added?

(a) 70(b) 700(c) 7000(d) 70 000(2 line spaces in between)

Write your answers in the spaces provided.

1. In 70 296,

(a) the place value of the digit 7 is ____________________.

(b) the value of the digit 2 is ____________________.

2. What is the third common multiple of 4 and 12?

(2 line spaces in between)Answer: ____________________ (2 line spaces in between)

Show your working clearly and write your answers in the spaces provided.

3. 3 necklaces cost as much as 7 rings. If 3 necklaces and 3 rings cost $1860, find the cost of 1 necklace. (5 line spaces in between)

Answer: ____________________

4. Alex and John took part in a race. Alexs average speed was 72m/min. When Alex completed the race in of an hour, John had only completed of the race.(a) Find Johns average speed.(b) Find the time taken by John to complete the race.

(6 line spaces in between)

Answer: (a) ____________________

(b) ____________________

5. Alex and John took part in a race. Alexs average speed was 72m/min. When Alex completed the race in of an hour, John had only completed of the race.(a) Find Johns average speed.(b) Find the time taken by John to complete the race.(c) Find the time taken by Alex to complete the race.

(7 line spaces in between)

Answer: (a) ____________________

(b) ____________________

(c) ____________________

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