(c) Nine thousand nineteen in standard form is. [1] In 4598, the digit is in the hundreds place, and its value is.

Transcription

1 Assessment Test for Singapore Primary Mathematics 3A Standards Edition This test covers material taught in Primary Mathematics 3A, Standards Edition ( 1. Fill in the blanks. (a) = 6803 (b) 4987 in expanded form is (c) Nine thousand nineteen in standard form is. (d) In 4598, the digit is in the hundreds place, and its value is. (e) 9406 is 100 more than. (f) 4900 is more than (g) The difference between 770 and 1000 is. (h) The sum of 3402 and 800 is. (i) When 286 is divided by 4, the quotient is and the remainder is. 2. Complete the following regular number patterns: 4623, 4723, 4823,,, 3. Write these numbers in order, beginning with the smallest:

2 4. (a) Round 5190 to the nearest thousand. (b) Round 8485 to the nearest ten. (c) Round 3968 to the nearest hundred. 5. Solve using mental math: (a) = (b) = (c) = (d) = (e) = (f) = (g) = (h) = 6. Estimate the value of by rounding each number to the nearest hundred. Then find the exact answer. (a) is about. (b) is exactly. 7. Estimate, and then find the value of (a) is about. (b) is exactly. 8. The difference between two numbers is 456. If the larger number is 854, what is the smaller number? 2

3 9. A computer costs $1400. A microwave oven is $850 cheaper than the computer. Mr. Max bought both the computer and the microwave oven. How much did he pay? 10. Solve: (a) (b) (c) (d) = = 36 Find the value of Write >, <, or = in each (a) (b) x 4 (c) x 0 (d) 40 x 3 x x 120 3

4 13. Solve using mental math: (a) 7 x 6 = (b) 8 x 7 (c) 9 x 8 = (d) 64 8 = (e) 49 7 = (f) 36 9 = (g) 4 x 30 = (h) 600 x 5 = (i) = (j) = (k) 50 x 6 x 2 = (l) 6 x 9 x 5 = 14. Write +,, x, or in each (a) 35 5 = 40 (b) 7 x 9 = 70 7 (c) = 400 (d) 1 432= Fill in the blanks with a number to make the following true. (a) 40 = 4 x 2 (b) 9 x 0 = x 6 (c) x 5 = 1000 (d) 25 x 38 x 7 = 7 x 25 x 16. Which of the following is the best estimate for the value of 587 x 8? (Do not find the actual answer.) Which of the following is the best expression to use in order to estimate the value of ?

5 18. Multiply: (a) x 4 (b) x 8 (c) x 7 (d) x Divide: (a) 499 (b) (c) (d) Fill in the boxes to complete the equations you would use to check your answer to 19(d) above. x

6 21. There are 36 monkeys in a zoo. There are 6 times as many monkeys as tigers. How many more monkeys are there than tigers? 22. Mrs. Merry had 197 stickers. She gave 7 stickers to each of the students in her class. She had fewer than 7 stickers left over. How many students does she have? 23. A fruit seller had 1136 oranges. 16 of them were rotten. He packed the rest into boxes of 8. How many boxes of oranges were there? 6

7 24. Mrs. Groucho earns $2300 a month. She spends $525 on food and $1250 on other things. How much does she save a month? 25. John weighs 64 lb. His brother weighs 16 lb less. Their father s weight is 2 times their total weight. What is their father s weight? 26. Sarah rolls two regular, 6-sided dice and adds the numbers. Fill in the blanks with likely, unlikely, certain, or impossible. (a) It is that she will get a sum less than 20. (b) It is that she will get a 1-digit sum. (b) It is that she will roll two sixes. (b) It is that she will get a sum greater than 20. 7

8 27. John did a survey of 30 families living in his neighborhood to find the number of computers each family had. He wrote the results as shown here. Create a tally chart from the data, and then complete the line plot X X X X X (a) What is the most likely number of computers? (b) How many families had this number of computers? (c) What is the difference between the number of families that had 2 computers and the number that had 4? (d) Is it impossible for a family to have 0 computers? (e) Is it likely that a family has 4 computers? 8

9 Answer Key 1. (a) 800 (b) (c) 9019 (d) 5; 500 (e) 9306 (f) 10 (g) 230 (h) 4202 (i) 71; , 5023, , 6826, 6862, (a) 5000 (b) 8490 (c) (a) 93 (b) 6885 (c) 5858 (d) 4300 (e) 41 (f) 45 (g) 1619 (h) (a) 1300 (b) (a) 500 (b) $ (a) 1540 (b) 6410 (c) 1772 (d) (a) < (b) > (c) = (d) = 13. (a) 42 (b) 56 (c) 72 (d) 8 (e) 7 (f) 4 (g) 120 (h) 3000 (i) 60 (j) 500 (k) 600 (l) (a) + (b) (c) (d) x 15. (a) 5 (b) 0 (c) 200 (d) (a) 1124 (b) 6912 (c) 9142 (d) (a) 24 r3 (b) 61 (c) 114 r5 (d) 811 r x more monkeys $ lb 26. (a) certain (b) likely (c) unlikely (d) impossible 27. x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x (a) 2 (b) 12 (c) 10 (d) no (e) no 9