Mathematics & Science (optional block)

Mean of [293, 205, 117, 407, 507]?

Mean of [83, 65, 47, 127, 157]?

Mean of [119, 89, 59, 175, 217]?

Mean of [257, 181, 105, 359, 447]?

Mean of [401, 277, 153, 551, 687]?

Mean of [407, 281, 155, 559, 697]?

Mean of [455, 313, 171, 623, 777]?

Mean of [434, 299, 164, 595, 742]?

Rectangle 56×109. Area?

Triangle angles 117°, 57°. Third?

Triangle angles 57°, 94°. Third?

Rectangle 72×141. Area?

Triangle angles 89°, 85°. Third?

Rectangle 152×301. Area?

Rectangle 16×29. Area?

Square side 29. Perimeter?

Triangle angles 153°, 21°. Third?

Rectangle 124×245. Area?

Rectangle 28×53. Area?

Square side 145. Perimeter?

Circle radius 43. Circumference? (π=22/7)

Rectangle 96×189. Area?

Triangle angles 53°, 86°. Third?

Square side 157. Perimeter?

Square side 9. Perimeter?