+/- 10
346 + 10 = ?
356
378 + 100 = ?
478
There are 55 cupcakes at a shop. They bake 10 more. How many cupcakes are there in all?
65 cupcakes
What is the strategy that uses blocks to show place value by ones, tens, and hundreds.
Base ten blocks
Skip count from 0 to 25 by 5s.
___, ____, ____, _____, ____, ____
0, 5, 10, 15, 20, 25
523 - 10 = ?
513
276 - 100 = ?
176
There are 23 dogs at the dog park. At 5:00 p.m. 10 dogs leave. How many dogs are left at the park?
13 dogs
Solve 215 + 100 using base ten blocks.
315
What are the next numbers in the pattern?
25, 20, 15, ______, _______
10, 5
____ + 10 = 320
310
_____ + 100 = 345
245
There are 129 students at the school. Then 10 more students come late. How many students are there in all?
What is the important information?
-129 students
-10 more
-How many students in all?
Show the number line strategy to solve 340 + 100.
440
200, 205, 210, ____, _____
Name the next two numbers in the pattern.
215, 220
267 + ____ = 277
10
295 -100 = ?
195
There are 532 fish in the aquarium tank. 100 more fish were added to the tank. How many fish are there total?
632 fish
Show the number line strategy to solve 240 - 100.
140
240, 230, _____, 210, ________
What are the two missing numbers in the pattern?
220 and 200
How many Pokemon cards did Sally have to start?
450
Jeff has 345 stickers. His grandma gives him a pack of 100 stickers for his birthday. How many stickers does Jeff have in all?
445 stickers
Jeff has 437 Pokemon cards in his binder, but he found out that 10 cards were fake. How many real Pokemon cards does he have?
Jeff has 427 real Pokemon cards.
Solve 347 + 100 using at LEAST two different strategies
447
What are the missing numbers in the pattern?
335, 330, ______, 320, _______
325 and 315