GL PTM Mental Math Practice 1

1) Look at this series: 36, 34, 30, 28, 24, … What number should come next?

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CCSS.2.NBT.A.2

2) Which of these numbers is not a multiple of 3?

81 111 73 27 105

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CCSS.4.OA.B.4

3) What is 3/4 of 20 m?

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CCSS.4.NF.B.4C

CCSS.4.NF.B.4B

4) The time is quarter to 7 in the evening. Write this in 24 clock time. (eg - 00:00)

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CCSS.3.MD.A.1

5) How many thirds will make 5?

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CCSS.3.NF.A.2A

CCSS.3.NF.A.1

6. 6.      What number is halfway between 5.8 and 7.8?

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CCSS.5.NBT.B.7

7)   What is the number 321 rounded to the nearest 100?

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CCSS.4.NBT.A.3

CCSS.3.NBT.A.1

8)   If there are 30 days in June, how many days are there left after the 12^th June?

9)   How many weeks are 49 days?

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CCSS.4.MD.A.1

10)   How many pairs are there if you have 16 socks?

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CCSS.3.OA.A.3