PSN1002

PROBLEM SOLVING 1002

Number (PSN1002)

[one] Name this 3-digit number. My hundreds digit is an odd number which is half my tens digit.
The sum of all my digits is 3.
Which number am I?
Hint

[two] A bank manager is making up a meeting schedule for four people who bank at his bank. She decides to arrange the four people in order of who has the most money. The amounts of money are:
$17 000
$9 900
$10 700
$17 500
See if you can figure out:
(a) the order of her interviews
(b) how much money each person has.
CLUES:
Dave has more money than Deena, and Deena has the least amount of money. Dave has more money than Doug, but less money than Doris.
Hint

[three] A group has been working with an abacus. Unfortunately, the abacus falls and all the counters fall off. The group members remember these clues:
a) The tens digit was one less than the ones digit.
b) The ones digit was half the hundreds digit.
c) The sum of all three digits is 11.
Can you name the number?
Hint

[four] A group was working with place value blocks. They created a numeral with their blocks and wrote down some clues.
CLUES:
a) There are twice as many small cubes as squares.
b) There are the same number of rods as squares.
c) The number of small cubes is a factor of 12 but not of 15 or 16.
d) The total number of blocks used is 12.
Can you figure out what their number was?
Hint

[five] Rory has six $100 notes. He also has eight $10 notes and two $1 notes. How much money does he have in total?
Hint