Rounding
Round 137
100
245 + 35 =
280
145 - 40 =
105
234 -->
+ 124 -->
234 --> 200
+ 124 --> +100
300
There were 25 tennis racquets and 36 hockey sticks. How many more hockey sticks are there than tennis racquets?
11 hockey sticks
Round 2,189
2,000
546 + 65 =
611
2,876 - 1,254 =
1,622
786 -->
+ 678 -->
786 --> 800
+ 678 --> + 700
1,500
Daniel found 8 rugby balls in the storeroom. Mr. Adams said there should be a total of 11 rugby balls. How many rugby balls were missing?
3 rugby balls
Round 17,678
20,000
765 + 532
1,297
5,436 - 4,227 =
1,209
5,679 -->
+ 2,123 -->
5,679 --> 6,000
+ 2,123 --> + 2,000
8,000
There were 7 baseballs in a basket and Daniel found 6 more baseballs on the floor. Then, a student borrowed 5 baseballs. How many baseballs were left in the storeroom?
8 baseballs
Round 56,370
56,000
6,508 + 5,604 =
12,112
54,670 - 30,780 =
23,890
67,432 -->
+ 2,789 -->
67,432 --> 70,000
+ 2,789 --> + 3,000
73,000Mr. Adams found 5 soccer balls in the storeroom and Daniel found 9 soccer balls on the field. The soccer team captain passed by and told them he kept 4 soccer balls at home for next practice. How many soccer balls in total are there?
18 soccer balls
Round 456,997
457,000
43,765 + 32,098 =
75,863
70,560 - 4,885 =
65,675
457,890 -->
+ 256,789 -->
457,890 --> 500,000
+ 256,789 --> + 300,000
800,000Write the number sentence that fits this: “Daniel found 17 basketballs but 3 of them were broken and another 5 needed pumping. There were only 9 basketballs that could be used.”
17 - 3 - 5 = 9