# Math 101 Exam 1

1. (2 pts) Write the number “ Two thousand three hundred
fifty two” in Egyptian.

2. (2 + 2 = 4 pts) The ____property and ____property are special cases

of the Any- order property of addition .

3. (5 pts) Define algorithm.

4. (2+2 = 4 pts) In the subtraction problem, 17−8 = 9, the
number 17 is called the____

and the number 9 is called the____ .

5. (4 pts) ( Circle all that apply .) The long division algorithm is a
prerequisite for learning :

Successive Approximation | Measurement Division | Number bonds |

Distributive Property | Mental Math | Converting fractions to decimals |

6. (5 pts) Fill in the blank:

(a) The most useful model for teaching the commutative property is____ .

(b) The most important arithmetic property learned in teaching the
multiplication algorithm is

____.

(c) After estimating the quotient and calculating the remainder in long
division,

it is necessary to check that 0 ≤· remainder < ____.

(d) When 176 ÷ 8 is presented as finding the number of segments of size 8 that
fit in a segment of

of size 176, one is using the____ interpretation of division.

(e) The most complicated case in learning the subtraction algorithm is____ .

7. (6 pts) Compute 478 × 86 using the Lattice method .

8. (12 pts) Use mental math to compute the following. Write down your answer in
a way that clearly

shows the steps involved in solving the problem mentally.

9. (3 + 3 = 6 pts) Find estimations for the following
using the technique specified.

(a) Simple Estimation: 6246 ÷ 74

(b) Over Estimate: 2523 − 437

10. (7 + 7 + 7 = 21 pts) For the following word problems,
give a full teacher’s solution which does not use

algebra .

(a) A shop sold 178 cakes on Monday. It sold 326 cakes total for Monday and
Tuesday. How many

more cakes did it sell on Monday than on Tuesday?

(b) Jill has four times as many stamps as David. How many
stamps must Jill give to David so that

they each have 90 stamps?

(c) Peter has twice as many stickers as Ali. Ali has 40
less stickers than Lihua. They have 300 stickers

altogether. How many stickers does Peter have?

11. (4 + 2 + 4 = 10 pts) Write a word problem using
partitive division for 92 ÷ 4 by following these steps:

(a) Draw the Singapore bar diagram which corresponds to partitive division for
92÷4 and use mental

math to solve the problem.

(b) Write the interpretive question which corresponds to partitive division for
92 ÷ 4.

(c) Make up an interesting, short, realistic , one-step word problem using the
partitive interpretation

which corresponds to 92 ÷ 4.

12. (6 pts) Explain why 0 ÷ 0 is undefined.

13. (7 pts) Find 4370 ÷ 47 by long division. Show your
estimates and use of place value to obtain the

quotient of each step.

14. (4+2+2 = 8 pts) (a) Explain the place value process in
detail. (b) Using 2- digit numbers , give an example

of an addition problem which does not use Step (ii). (c) Using 2-digit numbers,
give an example

of an addition which does use Step (ii).

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