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Make a sensible estimate

1st grade (Year 2 in England) · 16 questions · Common Core: 1.NBT.A.1 · England: Y2 Number and place value

Name

Date

Score/ 16

1
Question 1
Without counting one by one, which is the best estimate for the number of triangles? ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲
- A. about 100
- B. about 20
- C. about 50
- D. about 5
2
Question 2
Which is the most sensible estimate for the number of seats on a school bus?
- A. 5
- B. 500
- C. 5000
- D. 50
3
Question 3
Without counting one by one, which is the best estimate for the number of triangles? ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲
- A. about 20
- B. about 50
- C. about 5
- D. about 100
4
Question 4
Which is the most sensible estimate for the number of children in a class?
- A. 25
- B. 900
- C. 250
- D. 2
5
Question 5
Without counting one by one, which is the best estimate for the number of diamonds? ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆
- A. about 10
- B. about 50
- C. about 20
- D. about 100
6
Question 6
Which is the most sensible estimate for the number of crayons in a box?
- A. 12
- B. 120
- C. 1200
- D. 1
7
Question 7
Without counting one by one, which is the best estimate for the number of diamonds? ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆
- A. about 50
- B. about 10
- C. about 100
- D. about 5
8
Question 8
Which is the most sensible estimate for the number of steps to walk across a classroom?
- A. 1000
- B. 10
- C. 1
- D. 100
9
Question 9
Without counting one by one, which is the best estimate for the number of diamonds? ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆
- A. about 10
- B. about 20
- C. about 5
- D. about 50
10
Question 10
Which is the most sensible estimate for the number of seats on a school bus?
- A. 50
- B. 5
- C. 5000
- D. 500
11
Question 11
Without counting one by one, which is the best estimate for the number of squares? ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
- A. about 10
- B. about 50
- C. about 100
- D. about 20
12
Question 12
Which is the most sensible estimate for the number of pages in a picture book?
- A. 1000
- B. 30
- C. 300
- D. 3
13
Question 13
Without counting one by one, which is the best estimate for the number of squares? ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
- A. about 50
- B. about 10
- C. about 20
- D. about 100
14
Question 14
Which is the most sensible estimate for the number of pages in a picture book?
- A. 30
- B. 300
- C. 3
- D. 1000
15
Question 15
Without counting one by one, which is the best estimate for the number of stars? ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
- A. about 10
- B. about 100
- C. about 50
- D. about 5
16
Question 16
Which is the most sensible estimate for the number of children in a class?
- A. 900
- B. 250
- C. 2
- D. 25

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