MATH - Grade 1
Math Challenges
Source: https://www.openmiddle.com/category/kindergarten/counting-cardinality/
Activity 1
Using the digits 0 to 9 at most one time each, place a digit in each box to create a true statement.
Hint: Can you show two numbers you could add together using your fingers?
There are many answers. Here are some possibilities:
1 + 2 = 3 and 4 + 5 = 9; 2 + 4 = 6 and 5 + 3 = 8.
Activity 2
Use the digits 1-9, at most once, to complete the equation.
What is the greatest result you can make?
What is the least result you can make?
Hint:
What numbers work (or won’t work) for the tens digits?
Could the result have a zero in the one’s place?
Could the least result be less than 10?
Could the greatest result be greater than 100?
Answer:
27 – 8 = 14 + 5
25 – 8 = 13 + 4 (or 14 + 3) ~ least result of 17 = 17
95 – 2 = 87 + 6 (or 86 + 7) ~ greatest result of 93 = 93
