Addition
What is 123 + 245?
368
What is 345 − 123?
222
What is the nearest multiple of 10 to 47?
50
Round 68 to the nearest 10.
70
What do we call the answer to an addition problem?
The sum
What is 356 + 278?
634
What is 600 − 278?
322
What is the nearest multiple of 100 to 243?
200
Round 178 to the nearest 100.
200
What do we call the answer to a subtraction problem?
the difference
What is 487 + 356?
843
What is 753 − 468?
285
What is the nearest multiple of 10 to 384?
380
Round 342 to the nearest 10.
340
True or False: You can use the commutative property in both addition and subtraction.
False — only in addition (and multiplication)
What is 568 + 327
895
What is 801 − 567
234
What are the nearest multiples of 10 and 100 for 675?
680 (nearest 10) and 700 (nearest 100)
Round 459 to the nearest 10 and 100.
460 (nearest 10) and 500 (nearest 100)
When rounding to the nearest 10, if a number ends in 5, what do we do?
We round up to the next ten
What is 476 + 389
865
What is 903 − 678
225
What are the nearest multiples of 10 and 100 for 537?
540 (nearest 10) and 500 (nearest 100)
Round 736 to the nearest 10 and 100.
740 (nearest 10) and 700 (nearest 100)
What is the lowest number that rounds to 380 when rounding to the nearest 10?
375 — because numbers ending in 5 (like 375) round up to 380