adding two-digit numbers

(noun) The ancient art of combining two numerical beasts to create a mathematical monster. Often accompanied by confused looks, sweaty brows, and mild panic attacks. The process involves strategically placing numbers side by side and hoping for the best.

Lets say 47 + 69

Adding two-digit numbers is like having a race between a tortoise and a hare. The tortoise represents the tens place (4 in 47), and the hare represents the ones place (7 in 47).

First, the hare quickly hops over to the hare from the other number, which is 6. Now the hare is at 13, but it gets tired and goes back to the starting line. Meanwhile, the tortoise steadily crawls over to the other tortoise, which is 6. Now the tortoise is at 10.

At this point, the tortoise looks over and sees the hare at 13. The tortoise realizes it needs to catch up. So, it takes one more step, reaching 11, and then another step, reaching 12, and finally one more step, reaching 13.

Now, both the tortoise and the hare are at 13! They crossed the finish line together, and that's the answer to 47 + 69. The total is 116.

Just like the tortoise and the hare, each digit takes its own path to meet up, and when they finally do, you get the sum of the two numbers!

(also: Area of circle)
(also: Pythagorean theorem)
(also: Algebraic equations)
(also: Fractions and decimals)

Adding two-digit numbers is like combining two groups of friends. Imagine you have 47 friends in one group and 69 friends in another group. To find out how many friends you have in total, you count the friends from each group separately. You count 4 tens from the first group and 6 tens from the second group, which gives you 10 tens. Then, you count the 7 ones from the first group and 9 ones from the second group, which gives you 16 ones. So, when you add the tens and ones together, you have 10 tens and 16 ones, which equals 116 friends in total!

(also: Subtracting two-digit numbers)
(also: Counting and making change with money)
(also: Measuring and converting units of length)