七上正負數與數線1

Match the points on the number line with their corresponding values:

請排出在數線上的點由左至右，由小到大的排列?

-2.5 ​

-1.6 ​

-4.3

1.5

• -1.6

• -4.3

• 1.5

• -2.5

Tags

CCSS.6.NS.C.7A

CCSS.6.NS.C.7B

請排出下列各數的值由左至右，由小到大的排列?

|-2.5| ​

|-1.6| ​

|-4.3|

|1.5|

• |1.5|

• |-1.6|

• |-4.3|

• |-2.5|

Tags

CCSS.6.NS.C.7A

CCSS.6.NS.C.7B

下列哪一個數在加上絕對值的符號會比較大? A) 623 or B) 472.

• A) -623

• B) -472

Answer explanation

在選項中，-623 的絕對值是 623，而 -472 的絕對值是 472。因為 623 > 472，所以 -623 加上絕對值的符號後會比較大，因此正確答案是 A) -623。

Tags

CCSS.6.NS.C.7A

CCSS.6.NS.C.7B

Calculate the value of (-68) - 34 + 68. What is the result?

計算上列算式的值是多少?

• -34

• 0

• 34

• 68

Answer explanation

To solve (-68) - 34 + 68, first calculate (-68) - 34 = -102. Then add 68: -102 + 68 = -34. Thus, the result is -34.

Tags

CCSS.7.NS.A.3

Match the following expressions with their correct values:

請選出下列各式的值

1. | -15 | - | -30 | + 8

• 23

• -37

• -7

• 53

Answer explanation

To solve | -15 | - | -30 | + 8, first calculate |-15| = 15. Then, 15 - 30 + 8 = -7. Thus, the correct answer is -7.

Tags

CCSS.7.NS.A.1B

Calculate the value of 29 + (-65). What is the result?

計算異號數相加的結果。

• -36

• 36

• -94

• 94

Answer explanation

To calculate 29 + (-65), subtract 65 from 29. This gives 29 - 65 = -36. Therefore, the result is -36, which is the correct answer.

Tags

CCSS.7.NS.A.1C

Match the following calculations with their correct results: (計算異號數相加的結果)

1) 20 + (-30)

2) 32 + (-78)

3) 28 + (-33)

4) 33 + (-89)

• -10

• -5

• -5

• -10

• -56

• -56

• -46

• -46

Tags

CCSS.7.NS.A.1C

What is the result of (-7) + (-2)?

計算兩數相加的結果

• -5

• -9

• -10

• -8

Answer explanation

To find the result of (-7) + (-2), add the two negative numbers: -7 + -2 = -9. Therefore, the correct answer is -9.

Tags

CCSS.7.NS.A.1C

Match the following calculations with their results:(配對正確的結果)

1. (-6) + (-74)

2. (-12) + (-14)

3. (-18) + (-21)

4. (-19) + (-21)

• -39

• -39

• -26

• -40

• -80

• -26

• -40

• -80

Tags

CCSS.7.NS.A.1C

Tags

CCSS.7.NS.A.1C