Show:
Base 10 addition
Base 10 subtraction
Number line addition
number line subtraction
break apart addition
100
36 + 32
What is 68?
100
89 - 17
What is 72?
100
66 + 23
What is 89?
100
97 - 45
What is 52?
100
81 + 16
What is 97?
200
123 + 54
What is 177?
200
468 - 243
What is 225?
200
136 + 343
What is 479?
200
799 - 398
What is 401?
200
211 + 746
What is 957?
300
Jan had $38 in her piggy bank. She got $57 for her birthday. How much money is now in her piggy bank?
What is $95?
300
Bob went to the grocery store with $95. He spend $78 on groceries. How much money does he have left?
What is $17?
300
The temperature in the morning was 32 degrees. It went up 19 degrees during the day. What was the temperature at the end of the day?
What is 51 degrees?
300
I had 109 marbles in my jar at home. My sister knocked the jar over and 12 fell out. How many were left in the jar?
What is 97?
300
What is the sum of 345 and 458?
What is 803?
400
Why is this incorrect? 95 + 12 = 117
answers vary
400
Explain why is this is incorrect: 83 - 17 ____ 74
answers vary
400
Explain why this isn't correct: 116 + 324 = 439
answers vary
400
Explain why this is incorrect: 833 - 434 - 400
answers vary
400
Explain why this is incorrect: 234 + 356 200 + 300 = 500 30 + 50 = 80 4 + 6 = 10 ______________ 581
answers vary
500
Explain in words how you regroup using base 10 strategy for addition
answers vary
500
A shopkeeper bought 240 eggs and sold 148 eggs. How many eggs were left unsold?
What is 92?
500
Mark has read 495 pages in his book. He reads 123 more to finish the book. How many total pages are in his book?
What is 618?
500
During the festival, 674 students participated. Of them, 392 were boys. Find the number of girls who participated.
What is 372?
500
The petting zoo has 127 birds and 214 monkeys. How many total animals do they have?
What is 341?