This quiz links abacus beads to tens and ones. Read each question slowly and picture the rods in your mind.
The ones rod shows 3 and the tens rod shows 2. Which number is on the abacus?
13
32
25
23
The ones rod shows 7 and the tens rod shows 1. Which number is that?
71
10
27
17
The ones rod shows 0 and the tens rod shows 4. Which number is on the abacus?
4
44
40
14
On the ones rod you have 2 showing. You add one more lower bead to the beam. What new number do you see?
3
5
2
4
On the ones rod you show 4 with all four lower beads at the beam. To show 5, what should you do?
move the tens rod beads instead
move only one lower bead away from the beam
move the upper bead down and move all four lower beads away
add one more lower bead above the beam
On the ones rod you show 9 with the upper bead down and four lower beads up. To add 1 more and make 10, what should you do?
move all beads randomly and start again
add another upper bead on the ones rod
clear the ones rod and move one lower bead up on the tens rod
leave the ones rod the same and move one lower bead on the hundreds rod
The tens rod shows 3 and the ones rod shows 5. Which number is built on the abacus?
53
35
8
30
If every bead on all rods is away from the beam, what number does the abacus show?
0
100
1
10
When you use rods for ones, tens and hundreds, which place value does the third rod from the right show?
ones
thousands
hundreds
tens
The tens rod shows 2 and the ones rod shows 0. Which number is this on the abacus?
20
2
10
200
Starter
You are beginning to build two digit numbers on the abacus. Practise reading tens and ones so the place values stay clear.
Solid
You handled many two digit numbers well. Keep combining tens and ones until the patterns feel automatic.
Expert!
You are confident with tens and ones on the abacus. You are ready for faster addition and subtraction practice.
