Number Line Add Subtract - Sample Math Practice Problems

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Complexity=20, Mode=simple

What can you tell from the number line?

1.   13 - 5 =

2.   13 + 7 =

Complexity=100, Mode=simple

What can you tell from the number line?

1.   57 + 30 =

2.   96 - 22 =

Complexity=100, Mode=complex

What can you tell from the number line?

1.   Which problem(s) does this number line answer? Choose all that apply. 45 + __ = 86 86 + 45 = 86 - 45 = 45 - __ = 86 None of the above

2.   Which problem(s) does this number line answer? Choose all that apply. __ + 43 = 99 43 + 56 = __ 56 - 43 = __ 99 - 56 = __ None of the above

Answers

Complexity=20, Mode=simple

What can you tell from the number line?

#	Problem	Correct Answer	Your Answer
1	13 - 5 =
Solution Read off the first number: 8.

#	Problem	Correct Answer	Your Answer
2	13 + 7 =
Solution Read off the end number: 20.

Complexity=100, Mode=simple

What can you tell from the number line?

#	Problem	Correct Answer	Your Answer
1	57 + 30 =
Solution Read off the end number: 87.

#	Problem	Correct Answer	Your Answer
2	96 - 22 =
Solution Read off the first number: 74.

Complexity=100, Mode=complex

What can you tell from the number line?

#	Problem	Correct Answer	Your Answer
1	Which problem(s) does this number line answer? Choose all that apply.	45 + __ = 86 86 + 45 = 86 - 45 = 45 - __ = 86 None of the above
Solution Two of the choices mean the same thing:   45 + __ = 86   86 - 45 = __. The number line does not really help you; you can read off 45 from the line as easily as from the label. To get the answer, you still have to subtract or do some counting. A label for 41 would have been a lot more helpful. The remaining choices have nothing to do with this number line:   86 + 45 (= 131) and   45 - (-41) = 86.

#	Problem	Correct Answer	Your Answer
2	Which problem(s) does this number line answer? Choose all that apply.	__ + 43 = 99 43 + 56 = __ 56 - 43 = __ 99 - 56 = __ None of the above
Solution Read off the end number 99 to tell the sum of either   56 + 43 or   43 + 56. Read off the first number 56 for   99 - 43 = __ or   __ + 43 = 99 or   43 + __ = 99. The label for 43 tells   99 - 56 = __ or   56 + __ = 99 or   __ + 56 = 99.