Add two 2-digit numbers mentally when no carrying is needed.
Where your child meets this in real life: Mental addition of prices, scores, or measurements
SEAGReady breaks add 2-digit numbers (no carry) into 2 steps, taught in order so each skill builds on the last.
Add two 2-digit multiples of 10 (e.g., 30 + 40 = 70)
Add two 2-digit numbers by partitioning into tens and ones (e.g., 23 + 45 = 68)
Three free sample questions from our add 2-digit numbers (no carry) course. Every question comes with a full explanation, and hints that guide without giving the answer away.
Amelia has 30 stickers. Her friend Ruby gives her 40 more stickers. How many stickers does Amelia have now?
Leo has 34 football stickers. His friend Matthew has 25 stickers. How many stickers do they have in total?
Andrew collected 20 football cards. His brother George collected 50 football cards. How many cards do they have altogether?
This is the exact interactive worked example your child sees in SEAGReady. Step through it and watch the method build up.
Georgia collected 30 shells at the beach. Her brother Ethan collected 40 shells.
How many shells did they collect altogether?
30 + 40
Show Georgia's 30 shells as 3 tens.
Step 1 of 4
Georgia collected 30 shells at the beach. Her brother Ethan collected 40 shells.
How many shells did they collect altogether?
Georgia and Ethan collected 70 shells altogether.
The key insight: If you know 3 + 4 = 7, then you know 30 + 40 = 70!
Common mix-up: 30 + 40 = 34. This adds 30 and 4, not 30 and 40. The 40 means 4 tens, not 4 ones.
These are the misconceptions we see most often in add 2-digit numbers (no carry), including the ones our practice questions are specifically designed to catch.
Struggling with add 2-digit numbers (no carry)? The real gap is often in one of these earlier topics.
SEAGReady finds the exact step where your child gets stuck, teaches it with worked examples like the one above, and brings it back for review so it sticks.
Free to start ยท no card needed