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Regrouping across 0s
Solve for n +
Solve for n -
Vocab
Label it!
100
300 - 245 = n
What is n = 55?
100
324 + n = 721
What is n = 397?
100
457 - n = 149
What is n = 308?
100
This is a number that you add to another number.
What is an addend?
100
Jake collected 124 boxtops for his boy scout troop. Mark collected 87. How many more boxtops did Jake collect?
What is 37 more boxtops?
200
800 - 263 = n
What is n = 537
200
n + 65 = 412
What is n = 347?
200
643 - n = 212
What is n = 431?
200
The property that states 2 addends can be switched and still equal the same amount.
What is commutative property?
200
Gianna had $87. She spent $69 at the festival. How much does she have left?
What is $18?
300
408 - 242 = n
What is n = 166
300
n + 387 = 992
What is 605?
300
n - 182 = 57
What is n = 239?
300
Any number sentence.
What is an equation?
300
Ava needs $649 to go to summer camp. She already earned $487. How much more does she need?
What is $162?
400
501 - 263 = n
What is n = 238
400
n + 45 = 631
What is n = 586?
400
72 = n - 143
What is n = 215?
400
The answer to an addition problem.
What is a sum?
400
Mason wants to buy a bike helmet that costs $100. He earned $22 mowing lawns and $37 washing cars. How much more money does he need?
What is $41?
500
802 - 67 = n
What is 735
500
1,876 + n = 2,652
What is n = 776?
500
456 - n = 137 + 42
What is n = 277?
500
The answer to a subtraction problem.
What is the difference?
500
Carl, Grant and Scott want to set a school record for solving the most IXL question in one night. The record is 687. Carl solved 163, Grant solved 331, and Scott solved 94. Did the boys break the record? Why or why not?
What is No, because 167 + 331 + 94 < 687?