Practice jumping back on the abacus as you count down. These questions help you understand what comes just before a number.
You are counting down 9, 8, 7. Which number comes just before 7?
9
8
5
6
When you count backward, you move to the number just before the one you have. Stepping back one place in the count brings you to 6.
Counting backward from 10, what number do you say just before 10?
8
9
11
7
When you count backward, you move to the number just before the one you have. Stepping back one place in the count brings you to 9.
You move one bead back and go from 6 to the number before it. What is that number?
5
8
4
7
When you count backward, you move to the number just before the one you have. Stepping back one place in the count brings you to 5.
You count down 5, 4, 3, 2. Which number comes just before 2?
5
1
4
3
When you count backward, you move to the number just before the one you have. Stepping back one place in the count brings you to 3.
Starting at 15 and jumping one step back, which number do you reach?
12
14
16
13
When you count backward, you move to the number just before the one you have. Stepping back one place in the count brings you to 14.
You say 12, then move one bead back to count down. Which number do you say next?
9
11
10
13
When you count backward, you move to the number just before the one you have. Stepping back one place in the count brings you to 11.
Counting back from 20 by one, what number comes just before 20?
21
17
19
18
When you count backward, you move to the number just before the one you have. Stepping back one place in the count brings you to 19.
You start at 9 and count backward three steps. Which number do you reach after three jumps back?
7
5
6
4
When you count backward, you move to the number just before the one you have. Stepping back one place in the count brings you to 6.
You count down from 14 to 10. Which list shows the correct numbers?
14, 13, 12, 11, 10
13, 12, 11, 10, 9
15, 14, 13, 12, 11
14, 12, 11, 10, 9
When you count backward, you move to the number just before the one you have. Stepping back one place in the count brings you to 14, 13, 12, 11, 10.
You jump back from 7 to 3, moving one step at a time. Which number do you say just after 7 when you start counting down?
8
4
5
6
When you count backward, you move to the number just before the one you have. Stepping back one place in the count brings you to 6.
Starter
You are just starting with abacus counting, so keep practising small jumps with the beads.
Solid
You understand basic abacus counting, so now try to move the beads more quickly and accurately.
Expert!
Your abacus counting is excellent, so you are ready for longer jumps and bigger numbers.
