Page 45 - PlayFacto_A7
P. 45
Addition 99
Let’s complete the addition 99 board by to measure time.
Materials: 4 Mini-calculation boards, 81 Addition number chips,
2 White number chip sets (1-9), 1 Operation chip (+), Sandglass
1 Prepare the mini-calculation boards, addition number chips, white
number chips, operation chip (+), and sandglass as shown below.
2 Put four mini-calculation boards together to make a big board (10 10).
3 Place the operation chip (+) in the first horizontal row from the left.
4 Shuffle one white number chip set from 1 to 9 face down. Select the
chips one by one and place them as you select them in the first horizontal
row from the left side.
5 Repeat step 4 to place another white number chip set on the first vertical
row from the top.
Example
42 Workbook A-7
Let’s complete the addition 99 board by to measure time.
Materials: 4 Mini-calculation boards, 81 Addition number chips,
2 White number chip sets (1-9), 1 Operation chip (+), Sandglass
1 Prepare the mini-calculation boards, addition number chips, white
number chips, operation chip (+), and sandglass as shown below.
2 Put four mini-calculation boards together to make a big board (10 10).
3 Place the operation chip (+) in the first horizontal row from the left.
4 Shuffle one white number chip set from 1 to 9 face down. Select the
chips one by one and place them as you select them in the first horizontal
row from the left side.
5 Repeat step 4 to place another white number chip set on the first vertical
row from the top.
Example
42 Workbook A-7
