Decomposing and some random
How can you decompose the BOLD number?
345 - 217 =
200 + 10 + 7
Do you need to regroup or not?
473 - 158 =
Yes, you need to regroup the ones place
567 - 10 =
557
Draw your base ten blocks to solve.
339 - 112 =
227
If I want to count back using a number line to solve a subtraction problem, which number would I start on?
652 - 342 =
Would I start on 652 OR 342
652
Decompose the second number to solve.
435 - 234 =
435 - 200 = 235
235 - 30 = 205
205 - 5 = 200
Do you need to regroup?
503 - 103 =
No you do not
502 - 10 =
492
Draw your base ten blocks to solve.
502 - 133 =
369
Solve this equation using the open number line strategy.
567 - 348 =
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There are 433 shirts in a clothing store. Frank buys 100 of them. How many shirts are left?
333 shirts
Solve this equation. Do you need to regroup?
109 - 100 =
No you do not
What is Ms. Gedrich's favorite color?
Yellow!
Ms. Gedrich buys 498 pencils. Her students break 206 of them. How many pencils does Ms. Gedrich have left?
292 pencils
Use the open number line strategy to solve.
743 - 233 =
512
Adjust this equation.
753 - 449 =
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Solve this equation. Which place value spot do you need to regroup?
453 - 167 =
you need to regroup your tens and ones place
A sports store has 369 bikes. There are 10 bikes WITH training wheels. How many bikes DO NOT have training wheels?
369 - 10 = 359 bikes
What is Ms. Gedrich's favorite season?
Fall, Winter, Spring, or Summer?
Summer!!!!!!
What is Ms. Gedrich's favorite thing to do?
Go to the beach?
Decompose 368 to solve
500 - 368 =
500 - 300 = 200
200 - 60 = 140
140 - 8 = 132
Do you need to regroup?
405 - 150 =
Yes you do
Adjust this equation 2 ways to solve.
652 - 247
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Why do I need to regroup in this equation?
750 - 422 =
I need to regroup because
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Use the count on strategy to solve
291 - 167 =
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