Arithmetic Grade Six
Lesson One Hundred Twenty-one: Number Drop
Number Drop is an activity in which you add numbers. You start with eight
numbers and add them in pairs until you arrive at a grand sum. Here's a
blank Number Drop grid:
As you can see, the numbers are arranged in pairs along the top of the grid.
You add each pair and place the sum of each pair in the empty cell below
each pair. Here's a Number Drop grid partially filled out:
Next you take the two pairs of sum and add them together to get one final
pair of numbers to be summed which gets us to the grand sum:
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