Caculator practice abacus

15 x 19 + 18 ÷ 6 = 

• 250
• 199
• 400
• 288

2 + (9² - 4)

• 16
• 77
• 79

2 × ( 3 ³ − 5 + 8 ) 

• 2
• 60
• 24

• 1 2/4
• 1 2/15
• 1 1/2

• 1/9

• 9

• 1/5

• 5

• 81/200

• 1/2

• 40.5

• 50

• 15

• 18

• 20

• 24

What button do you press to use the secondary features on the calculator?

• 2nd

• On

• 2

• MODE

If I press the yellow 2nd button then this button what symbol appears

• %

• $

• *

• ?

What does this button do?

• square a number

• cube a number

• triple a number

• half a number