Addition within 1,000
Use a strategy learned in class to solve 105+163
268
Solve 658-232 using a strategy learned in class.
426
Solve 3x4 using equal groups AND an array.
3 groups of 4=12 total
3 rows with 4 in each row=12 total
Jefferson has 250 legos. He gifts one of his friends 123 legos. He then uses 101 legos to create a car. How many legos does he have left?
250-123=127
127-101=26
Jefferson has 26 legos left.
Even + Even = ?
Even
Solve 453+512
965
371
Solve 10 divided by 5 using equal sharing AND an array.
10 total divided into 5 groups=2 in each group
10 total divided into 5 rows = 2 in each row
Giselle is baking cookies for the 3rd grade. She bakes 58. She then realizes she needs to bake more so she bakes 13 more. She bakes 26 more just be sure. How many cookies did she bake in all?
58+13=71
71+26=97
Giselle baked 97 cookies.
Odd + Odd = ?
Even
Adjust the addends to solve the problem:
127+454
581
Solve 815-573
242
A doggy daycare places 28 dogs into 4 different rooms. Which expression will help you determine the number of dogs per room?
28 divided by 4
Jeremiah is distributing his 654 pokemon cards to his friends. He gives 204 to his friend Drew. He then gives 118 to his friend Erica. How many pokemon cards does Jeremiah have left?
654-204=450
450-118=332
Jeremiah has 332 pokemon cards left.
Even + Odd = ?
Odd
Solve 359+284
643
Adjust the numbers to solve the problem.
316-252= ?
316 can be changed to 320.
320-256= 64
Create an array that has 4 rows with 2 in each row. Which two equations match your array? (*hint-there will be 1 multiplication and 1 division equation)
4x2=8
8 divided by 4=2
Ms.Taylor is buying Halloween candy for her neighborhood trick or treaters. She knows that in her apartment complex, she has 22 kids on the first floor, 34 kids on the second floor, and 23 kids on the third floor. How many pieces of candy does she need to purchase?
79 pieces of candy
200+300=500
50+20=70
4+1=5
500+70+5=575
Max is incorrect. Explain his error and solve correctly.
Switched tens and ones in 312.
Correct Answer: 566
Dominic is solving 287+415 by adjusting the addends.
What number is the missing addend?
287+415= 290+ ?
412
Jacob is solving 527-812 by adjusting the numbers.
What number is the missing number?
527-812=530-?
815
Which multiplication expression is equivalent to 5x3?
3x5
Collin is working on a 500 piece puzzle. On Saturday, he placed 145 pieces down. On Sunday, he placed 256 pieces down. How many more pieces does he have left in order to complete the puzzle?
500-145=355
355-256=99
He has 99 more pieces left.
Marissa is solving 457-294 using decomposing.
457-200=257
257-80=177
177-4=173
Marissa is incorrect. Explain her error and solve correctly.
She put 80 in the tens place instead of 90. The correct answer is 163