N U M E R A C Y N I N J A S . O R G © 2 0 1 5 N U M E R A C Y N I N J A S . A L L R I G H T S R E S E R V E D

Round to Significant Figures Key Skills Complete the daily exercises to focus on improving this skill.

Day 1 Q Question Answer 1 Round 36 to 1 s.f. 2 Round 0.003817 to 1 s.f. 3 Round 9089 to 2 s.f. 4 Round 563 to 2 s.f. 5 Round 46 to 1 s.f. 6 Round 1774 to 3 s.f. 7 Round 9.0154 to 1 s.f. 8 Round 375 to 1 s.f. 9 Round 0.7918 to 1 s.f. 10 Round 0.0475 to 1 s.f. Day 3 Q Question Answer 1 Round 4.8571 to 2 s.f. 2 Round 0.003818 to 3 s.f. 3 Round 4.874 to 3 s.f. 4 Round 1.4244 to 2 s.f. 5 Round 0.001283 to 3 s.f. 6 Round 81 to 1 s.f. 7 Round 776 to 2 s.f. 8 Round 39 812 to 3 s.f. 9 Round 1.5469 to 3 s.f. 10 Round 646 to 2 s.f.

Day 2 Q Question Answer 1 Round 6.8559 to 2 s.f. 2 Round 1982 to 1 s.f. 3 Round 73 to 1 s.f. 4 Round 0.000264 to 2 s.f. 5 Round 810 to 1 s.f. 6 Round 1.4634 to 1 s.f. 7 Round 670 to 1 s.f. 8 Round 276 to 2 s.f. 9 Round 8.3649 to 3 s.f. 10 Round 0.0664 to 2 s.f. Day 4 Q Question Answer 1 Round 43 to 1 s.f. 2 Round 0.9435 to 3 s.f. 3 Round 0.004378 to 2 s.f. 4 Round 17.986 to 2 s.f. 5 Round 0.003662 to 1 s.f. 6 Round 0.002193 to 3 s.f. 7 Round 0.007928 to 1 s.f. 8 Round 64.88 to 3 s.f. 9 Round 0.4848 to 2 s.f. 10 Round 441 to 2 s.f.

N U M E R A C Y N I N J A S . O R G © 2 0 1 5 N U M E R A C Y N I N J A S . A L L R I G H T S R E S E R V E D

Round to Significant Figures Key Skills Complete the daily exercises to focus on improving this skill.

Day 5 Q Question Answer 1 Round 7406 to 3 s.f. 2 Round 470 to 1 s.f. 3 Round 0.0372 to 1 s.f. 4 Round 63.0584 to 1 s.f. 5 Round 23.2001 to 2 s.f. 6 Round 809 to 2 s.f. 7 Round 4608 to 3 s.f. 8 Round 0.004668 to 1 s.f. 9 Round 582 to 2 s.f. 10 Round 5.8638 to 3 s.f. Day 7 Q Question Answer 1 Round 878 to 1 s.f. 2 Round 6.5694 to 1 s.f. 3 Round 0.001304 to 2 s.f. 4 Round 0.001121 to 2 s.f. 5 Round 350 to 1 s.f. 6 Round 863 to 1 s.f. 7 Round 2.4762 to 3 s.f. 8 Round 8.0593 to 3 s.f. 9 Round 871 to 2 s.f. 10 Round 0.9077 to 2 s.f.

Day 6 Q Question Answer 1 Round 209.12 to 3 s.f. 2 Round 7.192 to 3 s.f. 3 Round 91.9635 to 3 s.f. 4 Round 4.955 to 1 s.f. 5 Round 732 to 1 s.f. 6 Round 6.506 to 3 s.f. 7 Round 4752 to 3 s.f. 8 Round 5163 to 3 s.f. 9 Round 3219 to 1 s.f. 10 Round 9.0499 to 2 s.f. Day 8 Q Question Answer 1 Round 571 to 2 s.f. 2 Round 0.000088 to 1 s.f. 3 Round 5.528 to 2 s.f. 4 Round 0.9817 to 1 s.f. 5 Round 7971 to 1 s.f. 6 Round 0.3245 to 1 s.f. 7 Round 0.1368 to 3 s.f. 8 Round 81.82 to 3 s.f. 9 Round 61.0772 to 2 s.f. 10 Round 5882 to 2 s.f.

N U M E R A C Y N I N J A S . O R G © 2 0 1 5 N U M E R A C Y N I N J A S . A L L R I G H T S R E S E R V E D

Round to Significant Figures Key Skills Complete the daily exercises to focus on improving this skill.

Day 9 Q Question Answer 1 Round 659 to 1 s.f. 2 Round 0.005109 to 3 s.f. 3 Round 0.508 to 2 s.f. 4 Round 0.002429 to 2 s.f. 5 Round 3.1315 to 1 s.f. 6 Round 21.5559 to 2 s.f. 7 Round 6974 to 3 s.f. 8 Round 0.009897 to 1 s.f. 9 Round 699 to 1 s.f. 10 Round 8922 to 1 s.f.

Day 10 Q Question Answer 1 Round 8.9032 to 1 s.f. 2 Round 1.9362 to 1 s.f. 3 Round 37.822 to 3 s.f. 4 Round 745.2 to 3 s.f. 5 Round 5739 to 1 s.f. 6 Round 8760 to 2 s.f. 7 Round 3921 to 1 s.f. 8 Round 0.4116 to 3 s.f. 9 Round 2.2585 to 1 s.f. 10 Round 79 to 1 s.f.

N U M E R A C Y N I N J A S . O R G © 2 0 1 5 N U M E R A C Y N I N J A S . A L L R I G H T S R E S E R V E D

Round to Significant Figures Key Skills Complete the daily exercises to focus on improving this skill.

Day 1 Q Question Answer 1 Round 36 to 1 s.f. 30 2 Round 0.003817 to 1 s.f. 0.004 3 Round 9089 to 2 s.f. 9100 4 Round 563 to 2 s.f. 560 5 Round 46 to 1 s.f. 50 6 Round 1774 to 3 s.f. 1770 7 Round 9.0154 to 1 s.f. 9 8 Round 375 to 1 s.f. 400 9 Round 0.7918 to 1 s.f. 0.8 10 Round 0.0475 to 1 s.f. 0.05 Day 3 Q Question Answer 1 Round 4.8571 to 2 s.f. 4.9 2 Round 0.003818 to 3 s.f. 0.00382 3 Round 4.874 to 3 s.f. 4.87 4 Round 1.4244 to 2 s.f. 1.4 5 Round 0.001283 to 3 s.f. 0.00128 6 Round 81 to 1 s.f. 80 7 Round 776 to 2 s.f. 780 8 Round 39 812 to 3 s.f. 39800 9 Round 1.5469 to 3 s.f. 1.55 10 Round 646 to 2 s.f. 650

Day 2 Q Question Answer 1 Round 6.8559 to 2 s.f. 6.9 2 Round 1982 to 1 s.f. 2000 3 Round 73 to 1 s.f. 70 4 Round 0.000264 to 2 s.f. 0.00026 5 Round 810 to 1 s.f. 800 6 Round 1.4634 to 1 s.f. 1 7 Round 670 to 1 s.f. 700 8 Round 276 to 2 s.f. 280 9 Round 8.3649 to 3 s.f. 8.36 10 Round 0.0664 to 2 s.f. 0.066 Day 4 Q Question Answer 1 Round 43 to 1 s.f. 40 2 Round 0.9435 to 3 s.f. 0.944 3 Round 0.004378 to 2 s.f. 0.0044 4 Round 17.986 to 2 s.f. 18 5 Round 0.003662 to 1 s.f. 0.004 6 Round 0.002193 to 3 s.f. 0.00219 7 Round 0.007928 to 1 s.f. 0.008 8 Round 64.88 to 3 s.f. 64.9 9 Round 0.4848 to 2 s.f. 0.48 10 Round 441 to 2 s.f. 440

N U M E R A C Y N I N J A S . O R G © 2 0 1 5 N U M E R A C Y N I N J A S . A L L R I G H T S R E S E R V E D

Round to Significant Figures Key Skills Complete the daily exercises to focus on improving this skill.

Day 5 Q Question Answer 1 Round 7406 to 3 s.f. 7410 2 Round 470 to 1 s.f. 500 3 Round 0.0372 to 1 s.f. 0.04 4 Round 63.0584 to 1 s.f. 60 5 Round 23.2001 to 2 s.f. 23 6 Round 809 to 2 s.f. 810 7 Round 4608 to 3 s.f. 4610 8 Round 0.004668 to 1 s.f. 0.005 9 Round 582 to 2 s.f. 580 10 Round 5.8638 to 3 s.f. 5.86 Day 7 Q Question Answer 1 Round 878 to 1 s.f. 900 2 Round 6.5694 to 1 s.f. 7 3 Round 0.001304 to 2 s.f. 0.0013 4 Round 0.001121 to 2 s.f. 0.0011 5 Round 350 to 1 s.f. 400 6 Round 863 to 1 s.f. 900 7 Round 2.4762 to 3 s.f. 2.48 8 Round 8.0593 to 3 s.f. 8.06 9 Round 871 to 2 s.f. 870 10 Round 0.9077 to 2 s.f. 0.91

Day 6 Q Question Answer 1 Round 209.12 to 3 s.f. 209 2 Round 7.192 to 3 s.f. 7.1 3 Round 91.9635 to 3 s.f. 92.0 4 Round 4.955 to 1 s.f. 5 5 Round 732 to 1 s.f. 700 6 Round 6.506 to 3 s.f. 6.51 7 Round 4752 to 3 s.f. 4750 8 Round 5163 to 3 s.f. 5160 9 Round 3219 to 1 s.f. 3000 10 Round 9.0499 to 2 s.f. 9.0 Day 8 Q Question Answer 1 Round 571 to 2 s.f. 570 2 Round 0.000088 to 1 s.f. 0.00009 3 Round 5.528 to 2 s.f. 5.5 4 Round 0.9817 to 1 s.f. 1 5 Round 7971 to 1 s.f. 8000 6 Round 0.3245 to 1 s.f. 0.3 7 Round 0.1368 to 3 s.f. 0.137 8 Round 81.82 to 3 s.f. 81.8 9 Round 61.0772 to 2 s.f. 61 10 Round 5882 to 2 s.f. 5900

N U M E R A C Y N I N J A S . O R G © 2 0 1 5 N U M E R A C Y N I N J A S . A L L R I G H T S R E S E R V E D

Round to Significant Figures Key Skills Complete the daily exercises to focus on improving this skill.

Day 9 Q Question Answer 1 Round 659 to 1 s.f. 700 2 Round 0.005109 to 3 s.f. 0.00511 3 Round 0.508 to 2 s.f. 0.51 4 Round 0.002429 to 2 s.f. 0.0024 5 Round 3.1315 to 1 s.f. 3 6 Round 21.5559 to 2 s.f. 22 7 Round 6974 to 3 s.f. 6970 8 Round 0.009897 to 1 s.f. 0.01 9 Round 699 to 1 s.f. 700 10 Round 8922 to 1 s.f. 9000

Day 10 Q Question Answer 1 Round 8.9032 to 1 s.f. 9 2 Round 1.9362 to 1 s.f. 2 3 Round 37.822 to 3 s.f. 37.8 4 Round 745.2 to 3 s.f. 745 5 Round 5739 to 1 s.f. 6000 6 Round 8760 to 2 s.f. 8900 7 Round 3921 to 1 s.f. 4000 8 Round 0.4116 to 3 s.f. 0.415 9 Round 2.2585 to 1 s.f. 2 10 Round 79 to 1 s.f. 80