Rounding
Round to the Tens:
68
70
Emma had 7 marbles. She won 10 more in a game and then gave 3 to her friend.
How many marbles does she have?
14 marbles
576
500
70
6
Rearrange this as addition:
873 - b = 67
b + 67 = 873
Adjust:
34 + 41
75
Round to the Hundreds:
258
300
Mia saved $1,200 for a new bike. She spent $350 on clothes and then earned $250 more from chores.
How much money does she have now?
$1,800
247 + 328 = L
200 + 300
40 + 20
7 + 8
575
Rearrange this to subtraction:
3478 + c = 3500
3500 - c = 3478
Adjust:
87 - 57
30
Round to the Hundreds:
849
800
756 - 312
756 - 300
456 - 10
446 - 2
444
Rearrange this to addition:
943 - 423 = w
w + 423 = 943
Adjust:
98 - 43
55
Round to the Tens:
35
40
Solve:
987 - 357 + 67 = G
967
436 + 584
400 + 500
30 + 80
6 + 4
1,020
Rearrange this to subtraction:
r + 438 = 600
600 - 438 = r
Adjust:
52 + 104
156
Round to the Tens:
11
10
Haley baked 875 cookies for a bake sale. She sold 530 cookies, then baked 900 more.
How many cookies does she have?
1,245 cookies
903 - 124
903 - 100
803 - 20
783 - 4
779
Rearrange this to subtraction:
e - 2 = 48302
2 + 48302 = e
Adjust:
72 - 56
16