Page 113 - NUMINO Challenge_M2

2. Number of Wooden Blocks

Number of Wooden Blocks

To count the number of wooden blocks, write the 3
number of wooden blocks on the top of each stack, and
add all those numbers. 22
To count the number of hidden wooden blocks, subtract 1
the number of wooden blocks that can be seen from the
total number of wooden blocks. 1

Top, Front, and Side Views

The following shows the views from the top, front, and side of the given figure.

Top

Side

Top Front Side

Front

To find the number of wooden blocks by using the views, add the number
of wooden blocks stacked in each space shown on the top view.

EExxpplloorree If the wooden blocks are stacked against a 3
2 22
wall, the stacks can be counted and added to 1
find a total of 3+2+2+2+1=10 (wooden
blocks). 1
1 22
The number of hidden wooden blocks is the 1

number of visible wooden blocks subtracted from
the total number of wooden blocks: 10-7=3
(wooden blocks).

EExxeerrcciissee Wooden blocks were stacked against a wall, as shown on the
right. How many hidden blocks are there?

110 NUMINO Challenge M2