Grade 3 Yellow Math Competition

Fractions and decimals

100

Write this fraction as a decimal 

5/10

0,5

200

write an equivalent fraction for 2/3

20/30, 200/300

300

write 0,25 as a fraction

25/100

400

write an equivalent decimal for 0,3

0,30 or 0,300

500

which fraction is larger 2/3 or 5/6?

5/6

Area, perimeter

100

A square has sides of 5 centimetres. What is the perimeter?

20 cm

200

A square has sides of 7 centimetres. What is the area?

49 cm²

300

A square has sides of 10 centimetres. What is the perimeter AND what is the area?

40 cm, 100 cm²

400

A square has an area of 64 cm². What is the length of the sides?

8 cm

500

A rectangle has an area of 56 cm². What could the sides be? List all the possibilities.

7 and 8 cms, 

2 and 28 cms, 

4 and 14 cms

Grade Math 3

100

Find the product of 10 X 40

400

200

Find the product of 71 X 6

426

300

45/9

5

400

120/6

20

500

1800/10

180

Grade Math 4

100

Add Mentally: 7453 + 378

7,831

200

Subtract mentally: 607-42

565

300

12 X 50

600

400

232 x 7 =

1624

500

113 x 42 =

4746

LCM

100

4 and 6

12

200

5 and 10

10

300

6 and 8

119 Legos

400

12 and 16

48

500

3, 5, 8

120