Mental Math Workouts - Set 1 1. 2 1/3 = name:…………………… 8m /3 14. 2. 43 ÷ 7 = 3. Complete the series: , 12 15. m TERM I READING 10 x 2 = 24 4 Use a protractor to measure angle ABC. ∠ABC = ° TIM ROB 0 STUDENT 16. B A 8. Circle the prime numbers: This shape is a Triangle Pentagon Trapezoid and has parallel sides. 1, 4, 5, 7, 9, 11, 12 A 9. Write 3 consecutive numbers in the boxes: 17. The 3 interior angles of any triangle add up to °. 10. Shade 75% of this shape: 18. FALSE 12. This liter container holds mL. 1L 500 mL A 70° C 80° 30° B A diameter is a straight line passing through the center of a circle and touching the circumference at 2 points. The length of the diameter of this mm. circle is 39 x 7 = 7 x 39 TRUE books more than May. 2 SAM C 7. / Rob read 6 MAY 6. 3/8 + 1/8 + 2/8 + 1/8 = 8 TOM 5. 2 x 3 x BOOKS READ 4. 1/5 x 5 = 13. 1 2 m2. Area of shape B = 3, 7, 11, 15, 11. 2 B 19. Use your ruler to find the perimeter of this irregular pentagon. cm. Perimeter = 20. Draw the next 2 shapes in the series. They must have the same measurements as the previous shapes. This line segment measures: cm or Page 10 mm. Mental Math Workouts © World Teachers Press ® www.worldteacherspress.com Mental Math Workouts - Set 2 13. 1. 2 x 3 x name:…………………… DAY SHIFT HRS = 24 10 8 2. 2 7/100 = 2 6 ● worked twice as many hours as 4 2 / . TIM RAY BOB BILL SUE 0 TOM 3. Shaded fraction = WORKER 4. Circle the 3 factors of 12 in the numbers below: 14. Shade the shape which differs from the others. 1, 5, 7, 4, 8, 6, 9, 14 5. Circle the 3 composite numbers: 2, 3, 8, 11, 14, 17, 21 6. The expanded numeral for 53 = A B C D E F 15. 6m 6m . 16. Can you draw over this shape without going over the same lines twice (in other words, is it traversable?). 7. How many minutes from 6:30 a.m. to 0930 hours? minutes. 8. This is a math array: 17. Draw a different array for 6: The circumference of a circle = π x diameter (π is 3.14). Measure the diameter and find the circumference of this circle. cm r ete m a Di 9. The difference between 15 x 8 and 8 x 15 is: (a) 15 (b) 8 (c) 0 (d) 23 18. Read horizontally first to find the coordinate reading for the big dot: 10. Write 3,004,006 in words: © World Teachers Press www.worldteacherspress.com B C D E 20. A Shape ® 2 Draw a diagonal in this rectangle and then measure it. mm. Diagonal = . 12. A chord is a straight line joining 2 points on the circumference of a circle. Draw a chord inside this circle. 3 A 19. The sides of an equilateral triangle are 4 1 . 11. m2. Area shaded = Mental Math Workouts B has the longer perimeter. Page 11 Mental Math Workouts - Set 1 Review 1. 33/4 = / 4 + 7/4 2. 56 ÷ = 6r2 15. name:…………………… 1,400 FRUIT PRODUCTION 1994 TONS 1,000 600 3. Complete the series: 200 AB7, BC14, CD21, DE28, A 4. 1/4 x 9 = 5. 3 x 2 x / Farm 6. 5/12 + 3/12 + 5/12 = 7. Use a protractor to show ∠ABC is (a) 70° (b) 65° (c) 80° (d) 75° 8. 9. 10. 11. 1/ C D E FARM F G produced 3 times as much fruit as farm 16. x 3 = 36 B . This is an irregular with congruent sides (ruler needed). 12 A 17. The interior angles of any triangle total 180°. C ∠ABC = °. C 22° 28° B 18. A diameter is a straight line passing Circle the composite numbers below: through 2, 7, 9, 11, 14, 19, 20 the center of Write 3 consecutive odd numbers in the boxes. a circle and touching the Shade 25% of this shape: circumference at two points. It is twice the radius. The radius of this circle is: 2 2 (a) 64 mm (b) 32 mm (c) 21/2 cm (d) 41/2 cm 12 x /3 = /3 x 12 TRUE FALSE ? B 12. 250 mL 250 mL A 19. The perimeter of this irregular hexagon is approximately: (a) 17 cm (b) 20 cm (c) 140 mm (d) 100 mm These 2 containers hold liters altogether. 13. 14. Area of A = cm2. cm or mm. 20. In the box draw the next shape in the series. It must have the same measurements as the others. A 11/4 cm This line measures 5 cm Page 22 Mental Math Workouts © World Teachers Press ® www.worldteacherspress.com Mental Math Workouts - Set 2 Review 14. EXPORTS 1994 F E x 4 = 48 PORTS 1. 6 x name:…………………… 2. 63/1,000 = 0. D C B A 3. Fraction shaded = / 0 5. Circle the 3 composite numbers which are also factors of 48. 5, 6, 8, 10, 16, 20, 28 6. Index Notation Expanded Numeral Common Numeral Complete the table. 52 2x2x2 400 600 TONS The bar graph show that Port as much as Port in 1994. 4. Circle the 4 factors of 51 in the numbers below: 1, 2, 3, 7, 13, 17, 51 200 800 1000 exported 3x 15. A chord is a straight line joining 2 points on the circumference but not passing through the center of a circle. Draw a 2-cm chord inside this circle. 16. Is this shape traversable? 36 7. How many minutes from 11:30 a.m. to 1415 hours? mins. 8. Draw the other 3 arrays for 8. 17. The circumference of a circle = π x diameter (π is 3.14). Find the circumference of this circle below. Circumference 9. The difference between 3/4 x 5 and 5 x 3/4 is: (b) 5 (c) 10 (d) 0 (a) 3/4 10. Write three hundred four thousand twenty in figures: = cm. 18. Give the coordinate reading for the large dot: d c b a 11. The sides and angles of an equilateral ∆ are congruent. °. Each angle = A 19. 12. Shade the shape which differs from the others. 13. Area shaded 2m = C D E F The diagonal in this rectangle measures mm. 20. Shape 2m B has the longer perimeter. A B m2. 8m © World Teachers Press® www.worldteacherspress.com Mental Math Workouts Page 23

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