Add 10 and 100
The solution to 657 + 10 = ?
What is 667?
What is 565?
Solve.
151 + 324 =
What is 475?
Use partial sums to solve.
347 + 242 =
589
Draw place value blocks to show your work. Regroup if needed.
372 + 281 =
653
The solution to 723 + 100.
What is 823?
Solve 181 + 100 on an open number line.
What is 281?
What is 250 + 298 = ?
548
Use partial sums to solve.
193 + 243 =
436
Draw place value blocks to show your work. Regroup if needed.
349 + 182.
531
What is 10?
Solve 202 + 598 on an open number line.
What is 800?
Maggie collects stickers. She gives 129 stickers to her friend. Now she has 286 left.
How many stickers does Maggie have before she gives some away?
397
Find the sum of 137 + 324.
Write the sum in expanded form and word form.
400 + 50 + 11
Four Hundred Sixty One
Draw place value blocks to show your work. Regroup if needed.
273 + 259 =
532
The missing addend in this equation: 322 + ? = 422
What is 100?
Use an open number line to solve 446 + 215 TWO different ways.
What is 661?
156 children in a school are girls. 148 children in that school are boys. How many children go to that school?
304
Choose a number between 100 and 400.
Add 384 to that number. What is the sum?
Answers vary
Ben said that the sum of 157 and 197 is 254. Nikki said that Ben made a mistake. Who is correct?
Nikki; Ben forgot to regroup 10 tens as 1 hundred when he added.
Bob plays a game. He scores 475 points. Bob plays again and scores 110 points. How many points does Bob score in both games?
What is 585?
Mary uses an open number line to find 286 + 137. All of the jumps she draws are greater than 1. Draw what Mary could have done. Write the sum.
What is 423?
Write an addition problem and solve it. Use 3-digit numbers. Then solve.
Answers vary
What is the same amount as 238 + 164.
Choose all that apply.
a) 200 + 190 + 12
b) 300 + 90 + 12
c) 402
d) 400 + 10 + 2
a, b, c
Write an addition problem that shows regrouping both the ones and the tens. Use 3-digit numbers between 100 and 400 as addends. Find the sum.
Answers vary.