Write an addition number sentence based on the picture (for example, 2 + 1 = 3).

First, count the red jigsaw puzzle pieces. There are 4 red jigsaw puzzle pieces.

Next, count the yellow jigsaw puzzle pieces. There are 3 yellow jigsaw puzzle pieces.

The first part of the addition number sentence is 4 + 3. To find the sum, count all of the jigsaw puzzle pieces together. There are 7 jigsaw puzzle pieces. The addition number sentence is 4 + 3 = 7.

Write an addition number sentence based on the picture (for example, 2 + 1 = 3).

First, count the yellow jigsaw puzzle pieces. There are 9 yellow jigsaw puzzle pieces.

Next, count the grey jigsaw puzzle pieces. There are 8 grey jigsaw puzzle pieces.

The first part of the addition number sentence is 9 + 8. To find the sum, count all of the jigsaw puzzle pieces together. There are 17 jigsaw puzzle pieces. The addition number sentence is 9 + 8 = 17.

Write an addition number sentence based on the picture (for example, 2 + 1 = 3).

First, count the red jigsaw puzzle pieces. There are 3 red jigsaw puzzle pieces.

Next, count the purple jigsaw puzzle pieces. There are 8 purple jigsaw puzzle pieces.

The first part of the addition number sentence is 3 + 8. To find the sum, count all of the jigsaw puzzle pieces together. There are 11 jigsaw puzzle pieces. The addition number sentence is 3 + 8 = 11.