This grade 1 math worksheet contains 5 addition problems where students must find the missing number to make each equation correct. The problems include single-digit numbers being added together, with the sums being at or below 10. Students are instructed to color in circles to help them solve the problems.

1. Addition sentences
Grade 1 Addition Worksheet
Reading and Math for K-5 © www.k5learning.com
Find the missing number. Color in circles to help.
1 + ___ = 4
2 + ___ = 5
6 + ___ = 9
4 + ___ = 6
1 + ___ = 5

2. Addition sentences
Grade 1 Addition Worksheet
Reading and Math for K-5 © www.k5learning.com
Find the missing number. Color in circles to help.
1 + 3 = 4
2 + 3 = 5
6 + 3 = 9
4 + 2 = 6
1 + 4 = 5