2-min Fluency Warm-up — Solve in your head.
9 + 7 =
15 − 6 =
8 + 8 =
13 − 4 =
Remember: 347 = 3 hundreds, 4 tens, 7 ones.
In 582, the 8 means
Expanded form: 316 = + +
Write the number: 700 + 40 + 9 =
Compare: 438 483 (<, >, =)
Number Talk — Explain WITHOUT calculating.
Which is bigger: 399 + 10 or 410? How do you know without adding?
My thinking:
Marisol says 205 is bigger than 250 because "5 is bigger than 0." Is she right? Why or why not?
My thinking:
Fill in the missing numbers.
Count by 10s: 217, 227, , 247,
Count by 100s: 145, 245, , , 545
Count by 5s: 480, 485, , 495,
Read carefully. Think about what is happening. Draw if it helps!
The school library has 264 picture books. The number of chapter books is 100 more than the picture books. How many chapter books are there? How many books is that in all?
Draw or write your thinking:
Chapter books: Total: