Mental calculation test 5

3 x 3 x 10 x 4 =

• 400

• 350

• 420

• 360

8 x 2 x 100 x 2 =

• 3200

• 2000

• 3600

• 4200

2 x 3 x 5 x 7 =

• 175

• 240

• 245

• 210

3 x 3 x 3 x 20 =

• 170

• 270

• 540

• 360

 $√64$  = 

•  8

•  3

• 4

•  7

What is the LCM of 12 and 10?

• 10

• 20

• 30

• 60

What is the LCM of 12 and 4?

• 12

• 16

• 24

• 48

What is the LCM of 8 and 4?

• 6

• 8

• 12

• 24

2400 ÷ 60 =

• 60

• 400

• 40

• 3

720 ÷ 8 =

• 80

• 70

• 90

• 60