Grade 3 Mathematics Contest 2004

Which of these has the greatest product?

Henry is 7 years older than Kevin. Mark is 3 years younger than Kevin. If Mark is 5 years old, how old is Henry?

How many cards are in ¼ of a regular deck of cards?

How many decimetres are in 1 kilometre?

The sum of two numbers is 13. The product of those same 2 numbers is 42. What are those numbers?

Hungry Harry can eat 18 donuts in an hour. This is twice as many as his sister Skinny Minny can eat. Together, how many donuts would they eat in 2 hours?

How many prime numbers are there between 51 and 99?

Richard had a coin collection with 24 quarters. If 15 of them were tarnished and 17 were dated before 1954, how many were both tarnished and dated before 1954?

On Monday crafty Catherine continued reading her book “How to Make an Heirloom Quilt” at the top of page 257. She put it down after she finished reading page 332. How many pages did Catherine read on Monday?

What comes next in this series 17, 14, 19, 16, 21, ___ ?

Farmer Frank went to the barn to see the chickens and roosters. He collected 2 ½ dozen eggs. On his way back to the farmhouse he slipped and broke all but 11 eggs. How many chicken eggs does Farmer Frank have that are not broken?

The weather outside Monday morning was –12 ºC. In the afternoon the temperature rose by 15 ºC. By evening however the temperature dropped another 10 ºC. What was the final temperature Monday evening?

If Oliver reads 1 book on December 1st,, 2 books on December 2nd, 3 books on December 3rd and so on. How many books will he have read altogether by Christmas Eve?

The average (arithmetic mean) of 6, 13 and 14 is:

Zoe saw chickens and horses at Mr. Ed’s farm. She counted 242 legs and 73 heads. How many chickens does Mr. Ed have?

How many minutes are there in one day?

Monique bought a blouse, tax free, that was regularly priced at $100. The blouse was marked $30 off and then 50% off the discounted price. How much did she pay for the blouse?

The students at St. Bernadette’s High School put on a play. During the first week 1572 tickets are sold, the second week 1753 tickets are sold, the third week 152 less tickets are sold than in its second week. How many tickets in total are sold in the 3 weeks?

The day after tomorrow will be December 27th. Five days after, 2 days before, 3 days after yesterday the penguins are having their annual ‘Penguin Pebble Parade’. On what day will the parade be held?

One morning a lizard fell into a muddy hole that was 12 meters deep. Each hour he would climb 4m up but he would also slide 2m back down. At this rate, how many hours until the lizard gets out?

Anthony’s pizza restaurant has square tables that can seat one person on each side. The Zander family came in and wanted to seat all of their 18 relatives together in one long row of tables, attached side-by-side. What is the least number of tables needed to accommodate the Zanders?

Silly Sam has 6 striped socks, 4 polkadot socks and 11 plain socks in his dresser drawer. How many socks must he take out before he can be sure of getting a pair of polkadot socks?

Which of the following numbers has the greatest number of factors?

Which of these would earn you more money? Being paid $35 every day for 10 days, being paid $2 the first day and doubling that amount each day for 10 days or being paid $305?

Calculate: 5 + 4 ×10 − 20 ÷ 2

11 x 11 x 11 x 11 =

Chloe has a collection of nickels worth $1.35. How many nickels does she have in all?

What is the product of the number of sides on a hexagon, a square and a pentagon?

Trevor the toad is following Freddi the frog. They come to a small stream where some children have placed 18 stones in a line going across the stream from one bank across to the other side. Freddie jumps across the stones 3 at a time, Trevor jumps across the stones 2 at a time. How many stones were touched by both, Trevor and Freddi?

How many triangles can you find in all?