Story Problems: Parts and Comparing

Solve put-together, take-apart, and compare stories.

Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.

What children learn in Level 31

Some stories have two parts that make a whole. 7 red beads and 5 blue beads: 12 beads in all.
If you know the whole and one part, find the other. 15 apples, 8 are red, the rest are green. 8 plus what makes 15? 7 are green.
Comparing stories ask how many more, or how many fewer. Sam has 11 rocks, and Kai has 7. Line them up: Sam has 4 more.
Careful! How many more doesn't always mean add. Here we found the difference: 7 plus 4 makes 11.
Picture it: parts and a whole, or two groups lined up side by side.

Georgia's K-12 Mathematics Standards:

1.NR.2.1 — Use a variety of strategies to solve addition and subtraction problems within 20.
1.NR.2.3 — Recognize the inverse relationship between subtraction and addition within 20 and use this inverse relationship to solve authentic problems.