Upper: _____ Lower: _____
◯ ◯ ◯ ◯ ━━━━━━━━━━━━━━━ ◯ ● ◯ ◯ Value = _____ abacus worksheet level 0
◯ ◯ ◯ ◯ ━━━━━━━━━━━━━━━ ◯ ◯ ● ◯ Value = _____ Upper: _____ Lower: _____ ◯ ◯ ◯ ◯
● ◯ ◯ ◯ ━━━━━━━━━━━━━━━ ◯ ◯ ◯ ◯ Value = _____ abacus worksheet level 0
Upper: ● ◯ ◯ ◯ Lower: ● ◯ ◯ ◯ Upper: _____ Lower: _____