Rounding to the Nearest 10
Round 60 to the nearest 10.
60
Round 302 to the nearest 100.
300
42 + 35 =
77
78 - 24 =
54
Which place value should you always start with when + and - multi-digit numbers?
Ones Place
Round 42 to the nearest 10.
40
Round 586 to the nearest 100.
600
148 + 350 =
498
529 - 103 =
426
Spongebob caught 148 jellyfish while he was jellyfishing. Patrick caught 91. How many jellyfish did they both catch combined?
239 jellyfish
Round 346 to the nearest 10.
350
Round 231 to the nearest 100.
200
264 + 318 =
582
438 - 253 =
185
Mario collected 468 coins. Luigi 283 coins. How many more coins did Mario have than Luigi?
185 coins
Round 75 to the nearest 10.
80
Round 449 to the nearest 100.
400
543 + 275 =
818
662 - 259 =
403
True or False?
I will look to see if a place value needs help before I solve a + or - problem.
True
Round 224 to the nearest 10.
220
Round 1,788 to the nearest 100.
1,800
467 + 265 =
732
3,941 - 623 =
3,318
A dog had a collection of 246 toys. He destroyed 27 of them. Later that year at his birthday, he received 39 more. How many toys did the dog end up having?
258 toys