Abacus level 1

What is the instruments name?

• Napiers rods

• beads and rods

• Abacus

• beads

What is the name of the bar in the middle of the abacus

• Middle bar

• line of wood

• bar in the middle

• dotted line

what is the number shown on the abacus

• 11

• 55

• 44

2+2+5 -4 =

• 5

• 64

• 3

• 9

what is the number shown on the abacus?

• 4

• 2

• 3

• 6

What is the number shown in the abacus?

• 1

• 7

• 9

• 8

What is the number shown in the abacus?

• 2

• 7

• 6

• 5

what is the number shown in the abacus?

• 9

• 0

• 8

• 5

what is the number shown in the abacus?

• 1

• 0

• 9

• 10

what is the number shown on the abacus

• 4

• 5

• 1

• 9