Draw the beads on the abacus.
Tens Ones Tens Ones Tens Ones
21 21 95 95 78 78
Write the numbers.
twenty one __________ sixty ______
thirteen ____________
eighty five _______
Add or subtract.
89
74
37
37 74 67 89
67
+ 61
- 32
+ 24
+ 61 + 24 - 4 - 32
- 4
Color 47 squares.
65