This quiz checks how well you can count numbers from 1 to 20 on the abacus. Take your time and imagine the beads in each place.
You want to show the number 10 using two rods, tens and ones. How many beads should be up on the tens rod and the ones rod?
2 ten beads and 0 ones beads
1 ten bead and 0 ones beads
1 ten bead and 1 one bead
0 ten beads and 10 ones beads
The number 10 has one group of ten and zero ones. So the tens rod shows 1 and the ones rod shows 0.
The tens rod shows 1 bead up and the ones rod shows 3 beads up. Which number from 1 to 20 does the abacus show?
3
13
31
10
One bead on the tens rod means ten and three beads on the ones rod mean three. Together they make thirteen.
You see 1 ten bead and 5 ones beads up. Which number should you read from the abacus?
51
15
5
10
One ten and five ones together make fifteen. We write this as 15 with 1 in the tens place and 5 in the ones place.
An abacus shows 1 ten bead and 8 ones beads. What number between 10 and 20 is this?
11
8
18
81
One ten means ten and eight ones add eight more. Ten plus eight makes eighteen.
On your abacus the ones rod shows 7 beads up. Which number from 1 to 10 is that rod showing?
7
6
9
8
Seven beads stand for the number 7 when each bead is 1. You can tap each bead as you say 1 to 7.
You have 9 beads up on the ones rod. You move one more bead up. Which number from 1 to 20 do you reach now?
8
10
11
9
Nine plus one more bead makes ten. That is why we say 10 after 9 when counting.
The tens rod is at 0 and the ones rod shows 4 beads. Which number are you showing altogether?
14
40
5
4
Zero tens means there are no full tens to count. Four ones on the ones rod give the number 4.
You want the abacus to show 12. How many beads should you move up on the tens rod and on the ones rod?
1 ten bead and 2 ones beads
1 ten bead and 1 one bead
0 ten beads and 12 ones beads
2 ten beads and 1 one bead
The number 12 has one ten and two ones. So one bead goes up on the tens rod and two beads go up on the ones rod.
You see 1 ten bead and 9 ones beads up on the abacus. Which of these numbers does that match?
16
11
9
19
One ten bead is ten and nine ones add nine. Ten plus nine equals nineteen.
You are counting from 1 to 20 using beads. Which number comes just after 14 in this counting line?
15
13
20
16
When we count, 15 comes right after 14. The order goes 13, 14, 15, 16 and so on.
Starter
You know some numbers from 1 to 20, and with more practise you will read them on the abacus more smoothly.
Solid
You understand most numbers from 1 to 20 on the abacus, and steady practise will help you master every pattern.
Expert!
You handle numbers from 1 to 20 with ease on the abacus, and your place value understanding is already impressive.
