Numbers

Question 1

What is the place value of the 3 in 245 389?

Answer 1

300

Question 2

Write in the missing numbers: 675 453 = 
[    ] hundred thousands
[    ] ten thousands
[    ] thousands
[    ] hundreds
[    ] tens
[    ] ones

Answer 2

6 hundred thousands
7 ten thousands
5 thousands
4 hundreds
5 tens
3 ones

Question 3

What does the 2 mean in 12 034?

Answer 3

2000

Question 4

What is 10000 + 3000 + 400 + 30 + 1?

Answer 4

13431

Question 5

Write 876 325 in word form

Answer 5

eight hundred and seventy-six thousand, three hundred and twenty-five.`

Question 6

Round 26 to the nearest 10.

Answer 6

30

Question 7

Round 31 to the nearest 10.

Answer 7

30

Question 8

Round 45 to the nearest 10.

Answer 8

50

Question 9

Round 234 344 to the nearest 100.

Answer 9

234 300

Question 10

Round 23 to the nearest 5.

Answer 10

25

Question 11

Estimate 998 + 2 239 and show how you did it.

Answer 11

is approximately 1000 + 2 239 = 3 239

Question 12

Estimate 5 699 + 1 499 and show how you did it.

Answer 12

is approximately 5 700 + 1 500 = 7 200

Question 13

Billy Bob buys some potatoes from Becky Sue for R27. Billy Bob only has R10 notes, and Becky Sue has no change. They agree that they will round the amount to the nearest R10. How many R10 notes does Billy Bob give Becky Sue?

Answer 13

3

Question 14

Fill in the missing numbers: 0; 1; 4; _; _; 25; 36; _

Answer 14

9, 16

49

Question 15

What is the fourth term in 0;1;3;5;7;9

Answer 15

5

Question 16

What are the next three numbers in this sequence?

1; 1; 2; 3; 5; 8; _; _; _? Do you know what this sequence is called?

Answer 16

13; 21; 34

The Fibonacci sequence

Question 17

Bodean is making a birthday gift for his sister, Brandine. He fills a jar with frogs and jawbreakers. For each frog he puts in the jar, he puts in three jawbreakers. When he has used up all his frogs, he covers them with an extra 6 jawbreakers. What is the rule for calculating the number of jawbreakers in the jar from the number of frogs? If he puts in 10 frogs, how many jawbreakers does he put in?

Answer 17

jawbreakers = 6 + (frogs x 3)

6 + (10 x 3) = 36