Write addition sentences for arrays: sums to 10
key notes :
In an array, objects are in rows and columns. This is an array of circles.
Rows go side-to-side.
There are 3 rows. There are 4 circles in each row.
Columns go up-and-down.
There are 4 columns. There are 3 circles in each column.
Learn with an example
Use repeated addition to describe the array.
___ + 2 + 2 + 2 = ____
The addition number sentence has 4 parts because the array has 4 rows.
Count the circles in the row.
There are 2 circles in the row.
2 + 2 + 2 + 2 = ?
Add the parts to get the sum.
2 + 2 + 2 + 2 = 8
Use repeated addition to describe the array.
3 + ___ = ____
The addition number sentence has 2 parts because the array has 2 rows.
Count the triangles in the row.
There are 3 triangles in the row.
3 + 3 = ?
Add the parts to get the sum.
3 + 3 = 6
Use repeated addition to describe the array.
____ + 4 = ______
The addition number sentence has 2 parts because the array has 2 rows.
Count the triangles in the row.
There are 4 triangles in the row.
4 + 4 = ?
Add the parts to get the sum.
4 + 4 = 8
Let’s practice!🖊️
