Which method may be quicker for 99 + 37: adding directly or making 100 first?

Q: What will my child learn in "Compare two solution methods"?

Students compare methods such as standard algorithm, partial products, decomposition, and compensation. This 4th Grade Math lesson builds the skill Reason with properties and equivalence with a concept card and practice.

Q: What grade level is "Compare two solution methods" for?

"Compare two solution methods" is a 4th Grade Math lesson in the Stretch: Number Reasoning unit, designed for students around ages 9-10.

Q: How many practice questions are in this lesson?

This lesson includes 60 practice questions with instant feedback. Guests can try a few for free, and signed-in learners get the full adaptive set that adjusts to their level.

Q: How does Sparq help with "Compare two solution methods"?

Sparq is a safe AI tutor that gives kid-friendly hints and explains Compare two solution methods step by step, helping students learn without just giving away the answer.

Q: Do I need an account to practice "Compare two solution methods"?

No account is needed to start — guests can try this 4th Grade Math lesson for free. Signing in saves progress, unlocks more practice questions, and tracks mastery.

Question

Which method may be quicker for 99 + 37: adding directly or making 100 first?

Accepted Answer

making 100 first