Abacus

Move the beads to write and read numbers.

Mode

Value

×1 000

×100

×10

×1

Learning objectives

Grade 1
Discover place value up to hundreds. Understand that 10 beads on one rod become 1 bead on the next rod up.
Grade 2
Extend place value to thousands. Automate the ten-for-one exchange across four columns.
Grade 3
Read and write numbers up to tens of thousands, across five rods.
Grade 4
Work with six-digit numbers. Identify the groups (thousands, units) to read and write them.
Grade 5
Extend to millions. Consolidate place value across seven rods.

About this activity