Question

add.
hint: use the place value blocks to help solve $19 + 72$.
$19 + 72 = \boxed{\quad}$

Explanation:

Step1: Break into place values

19 can be broken into 1 ten (10) and 9 ones, and 72 can be broken into 7 tens (70) and 2 ones. So we have:

• Tens place: \(10 + 70\)
• Ones place: \(9 + 2\)

Step2: Add tens place

Adding the tens: \(10 + 70 = 80\)

Step3: Add ones place

Adding the ones: \(9 + 2 = 11\)

Step4: Combine results

Now, add the results from the tens and ones places: \(80 + 11 = 91\)

Answer:

91