Estimate Decimal Operations Quiz

Authored by Kazu Hoshino

Mathematics

6th Grade

CCSS covered

Used 6+ times

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14 questions

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MULTIPLE CHOICE QUESTION

30 sec • Ungraded

$31.09\ \times\ 2.9$ Choose the best estimate:

6.0

9.0

Answer explanation

Round to the nearest whole numbers. 30 x 3 = 90. Therefore, 90 is the best estimate.

Tags

CCSS.5.NBT.B.7

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

$48.09\ \times\ 4.2$ Choose the best estimate:

160

200

Answer explanation

Round to the nearest whole numbers. 50 x 4 = 200. Therefore, 90 is the best estimate.

Tags

CCSS.5.NBT.B.7

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

$7.09\ \times\ 6$ Choose the best estimate:

0.42

4.2

420

Answer explanation

Round to the nearest whole numbers. 7 x 6 = 42. Therefore, 42 is the best estimate.

Tags

CCSS.5.NBT.B.7

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

$11.09123456\ \times\ 9$ Choose the best estimate:

9.9

999

0.99

Answer explanation

Round to the nearest whole numbers. 11 x 9 = 99. Therefore, 42 is the best estimate.

Tags

CCSS.5.NBT.B.7

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

$0.003\ \times\ 5$ Choose the best estimate:

Answer explanation

Round to the nearest whole numbers. 0 x 5 = 0. Therefore, 0 is the best estimate.

Tags

CCSS.5.NBT.B.7

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

$23.5\ \times\ 0.000003$ Choose the best estimate:

Answer explanation

Round to the nearest whole numbers. 23 x 0 = 0. Therefore, 0 is the best estimate.

Tags

CCSS.5.NBT.B.7

MULTIPLE SELECT QUESTION

30 sec • Ungraded

$890\ \div3$ Which of the following are compatible numbers that can be used to estimate the quotient quickly and accurately?

$880\div3$

$900\div3$

$890\div3$

$88\div3$

Tags

CCSS.4.NBT.B.6

MULTIPLE SELECT QUESTION

30 sec • Ungraded

$251\ \div8$ Which of the following are compatible numbers that can be used to estimate the quotient quickly and accurately?

$250\div8$

$240\div8$

$260\div8$

$270\div8$

Tags

CCSS.4.NBT.B.6

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

$4321\div60$ Which of the following are compatible numbers that can be used to estimate the quotient quickly and accurately?

$4300\div60$

$4500\div60$

$4200\div60$

$4000\div60$

Tags

CCSS.4.NBT.B.6

10.

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

$9237\div87$ Which of the following are compatible numbers that can be used to estimate the quotient quickly and accurately?

$9000\div90$

$9200\div90$

$8800\div88$

$9500\div87$

Tags

CCSS.4.NBT.B.6

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Estimate Decimal Operations

31.09 × 2.931.09\ \times\ 2.931.09 × 2.9 Choose the best estimate:

Round to the nearest whole numbers. 30 x 3 = 90. Therefore, 90 is the best estimate.

48.09 × 4.248.09\ \times\ 4.248.09 × 4.2 Choose the best estimate:

Round to the nearest whole numbers. 50 x 4 = 200. Therefore, 90 is the best estimate.

7.09 × 67.09\ \times\ 67.09 × 6 Choose the best estimate:

Round to the nearest whole numbers. 7 x 6 = 42. Therefore, 42 is the best estimate.

11.09123456 × 911.09123456\ \times\ 911.09123456 × 9 Choose the best estimate:

Round to the nearest whole numbers. 11 x 9 = 99. Therefore, 42 is the best estimate.

0.003 × 50.003\ \times\ 50.003 × 5 Choose the best estimate:

Round to the nearest whole numbers. 0 x 5 = 0. Therefore, 0 is the best estimate.

23.5 × 0.00000323.5\ \times\ 0.00000323.5 × 0.000003 Choose the best estimate:

Round to the nearest whole numbers. 23 x 0 = 0. Therefore, 0 is the best estimate.

890 ÷3890\ \div3890 ÷3 Which of the following are compatible numbers that can be used to estimate the quotient quickly and accurately?

251 ÷8251\ \div8251 ÷8 Which of the following are compatible numbers that can be used to estimate the quotient quickly and accurately?

4321÷604321\div604321÷60 Which of the following are compatible numbers that can be used to estimate the quotient quickly and accurately?

9237÷879237\div879237÷87 Which of the following are compatible numbers that can be used to estimate the quotient quickly and accurately?

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$31.09\ \times\ 2.9$ Choose the best estimate:

$48.09\ \times\ 4.2$ Choose the best estimate:

$7.09\ \times\ 6$ Choose the best estimate:

$11.09123456\ \times\ 9$ Choose the best estimate:

$0.003\ \times\ 5$ Choose the best estimate:

$23.5\ \times\ 0.000003$ Choose the best estimate:

$890\ \div3$ Which of the following are compatible numbers that can be used to estimate the quotient quickly and accurately?

$251\ \div8$ Which of the following are compatible numbers that can be used to estimate the quotient quickly and accurately?

$4321\div60$ Which of the following are compatible numbers that can be used to estimate the quotient quickly and accurately?

$9237\div87$ Which of the following are compatible numbers that can be used to estimate the quotient quickly and accurately?