Adding Three Numbers — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Liam has 4 apples, Ana has 5 apples, Sam has 3 apples. How many in all?
A) 11
B) 12
C) 13
D) 14
Word problems help first graders translate real-life situations into three-addend addition sentences.
2. Mia sees 6 red, 2 blue, and 4 green crayons. How many crayons in all?
A) 10
B) 11
C) 12
D) 13
Looking for a ten-bond pair inside the story speeds up the mental math for Grade 1 students.
3. Max reads 3 books Monday, 3 Tuesday, and 5 Wednesday. How many books in all?
A) 10
B) 11
C) 12
D) 13
Using a doubles strategy inside a word problem shows students how mental math applies to real stories.
4. Ana has 7 stickers, gets 3 more, then gets 2 more. How many now?
A) 11
B) 12
C) 13
D) 14
Ten-bond pairs make three-step adding stories feel easy and quick for first graders to solve.
Part B: Fill in the Blank
Write the correct answer on each line.
1. Sam picks 2 red, 3 yellow, and 4 blue flowers. In all: 9
Three-addend story sums help first graders connect addition to counting real objects.
2. Mia has 5 crayons, Liam has 5, Ana has 2. In all: 12
Doubles inside word problems reinforce fluency and keep the math simple for Grade 1.
3. A shelf has 4 books, 6 toys, and 2 blocks. In all: 12
Finding a ten-bond pair before adding the last number is a fast strategy for first graders.
4. Max eats 3 grapes, 3 berries, and 7 apples. In all: 13
Combining doubles and larger addends teaches flexible thinking in word problems.
5. Ana has 8 stickers, gets 1 more, and 2 more. In all: 11
Reordering addends in a story to make ten first is a powerful Grade 1 addition strategy.