Estimate and check answers

What you'll learn

1. 1

   Imagine you have 52 marbles 🟣. Before you count them, you can make a clever guess — that's an estimate!

2. 2

   What does it mean to estimate?

3. 3

   Look at this jar of sweets 🍬. There are 28 sweets. Estimate how many by dragging the slider.

4. 4

   Let's estimate 42 + 19 together.

5. 5

   Now you try! Estimate 67 + 24 by rounding to the nearest 10.

6. 6

   What is 67 rounded to the nearest 10?

7. 7

   Your estimate for 67 + 24 was 90. Now check: what is the exact answer?