Adding 3 digits without regrouping

Front

What is the sum of 400 + 26?

Back

426

Front

What is the sum of 500 + 36?

Back

536

Front

What is 516 + 201?

Back

717

Front

What is 180 + 119?

Back

299

Front

What is 611 + 345?

Back

956

Front

What does it mean to add three digits without regrouping?

Back

It means to add numbers where the sum of each column (hundreds, tens, units) does not exceed 9.

Front

What is the sum of 100 + 200 + 300?

Back

600

Front

What is the sum of 250 + 150 + 100?

Back

500

Front

What is the sum of 300 + 400 + 200?

Back

900

Front

What is the sum of 123 + 456 + 321?

Back

900