1.
|
Using the tip, what is the correct answer to the given calculation?
TIP: To multiply a number by 5: first divide by 2, then move the digits to the left. Note: whole numbers that do not have decimal parts are written without a d.p. e.g. 200.0 = 200: in such cases the d.p. is not normally needed. 3,434 × 5 = ? |
|
[ ] |
17,107 |
[ ] |
17,017 |
[ ] |
17,710 |
[ ] |
17,170 |
|
|
2.
|
Using the tip, what is the correct answer to the given calculation?
TIP: To divide a number by 5: first multiply by 2 and then move the digits to the right. 888 ÷ 5 = ? |
|
[ ] |
17,760 |
[ ] |
17.76 |
[ ] |
1,776 |
[ ] |
177.6 |
|
|
3.
|
Using the tip, what is the correct answer to the given calculation?
TIP: To multiply a number by 9: first multiply the number by 10, then subtract the original number from it. 47 × 9 = ? |
|
[ ] |
432 |
[ ] |
423 |
[ ] |
342 |
[ ] |
324 |
|
|
4.
|
Using the tip, what is the correct answer to the given calculation?
TIP: To multiply a number by 11, first multiply the number by 10, then add the original number to it. 96 × 11 = ? |
|
[ ] |
1,605 |
[ ] |
1,056 |
[ ] |
1,560 |
[ ] |
1,065 |
|
|
5.
|
Using the tip, what is the correct answer to the given calculation?
TIP: To multiply a number by 8: multiply the number by 2, then by 2 again, and finally by 2. 120 × 8 = ? |
|
[ ] |
609 |
[ ] |
906 |
[ ] |
960 |
[ ] |
690 |
|
|
6.
|
Using the tip, what is the correct answer to the given calculation?
TIP: To divide a number by another number which is a multiple of 10 and whose only non zero digit is the leading digit 1: move the digits to the right by the same number of zeros that are in the multiple of 10. Note: whole numbers that do not have decimal parts are written without a d.p. e.g. 200.0 = 200: in such cases the d.p. is not normally needed. 76,345 ÷ 1,000 = ? |
|
[ ] |
76.345 |
[ ] |
763.45 |
[ ] |
7,634.5 |
[ ] |
0.76345 |
|
|
7.
|
Using the tip, what is the correct answer to the given calculation?
TIP: To multiply a number by another number which is a multiple of 10 and whose only non zero digit is the leading digit 1: move the digits to the left by the same number of zeros that are in the multiple of 10. Note: whole numbers that do not have decimal parts are written without a d.p. e.g. 200.0 = 200: in such cases the d.p. is not normally needed. 34.56 × 100 = ? |
|
[ ] |
345.6 |
[ ] |
3,456 |
[ ] |
34,560 |
[ ] |
0.3456 |
|
|
8.
|
Using the tip, what is the correct answer to the given calculation?
TIP: To multiply a number by 12, first multiply the number by 10, then add twice the original number to it. 38 × 12 = ? |
|
[ ] |
456 |
[ ] |
465 |
[ ] |
645 |
[ ] |
546 |
|
|
9.
|
Using the tip, what is the correct answer to the given calculation?
TIP: To divide a number by 25: divide by 100, then multiply by 4. 225 ÷ 25 = ? |
|
|
|
10.
|
Using the tip, what is the correct answer to the given calculation?
TIP: To multiply a number by 25: multiply by 100, then divide by 4. 816 × 25 = ? |
|
[ ] |
24,000 |
[ ] |
20,040 |
[ ] |
20,400 |
[ ] |
20,004 |
|
|