Mental mathematics 3
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The document consists of a series of mathematical problems and exercises aimed at Level 3 students, covering topics such as basic arithmetic, conversions between units, and number comparisons. It includes questions on addition, subtraction, multiplication, and the representation of numbers in words and Roman numerals. Additionally, there are tasks for identifying even and odd numbers, arranging numbers, and understanding geometrical concepts.
Mental mathematics 3
- 1. The Institute of ELC The Institute of ELC Mental Mathematics (Level 3) 1. 2000 + 400 + 20 + 5 = 2. Write the numbers in words. 3459: __________________________________ 3. Put =, > or < to complete the number sentence. 4. 115 x 2 = ___ 5. 1 Km 240 m =___________ m. 6. Rs 5.70 + Rs 3.10 = Rs______________. 7. 573 x 4 = __________________ . 8. Rs 88.95 – Rs 60.80 = __________________. 9. 143 cm = _____________m___________cm. 10.3410 ,______________ , 3430 , 3440 ,______ 1. 4000 + 200 + 20 + 6 =________________ 2. Write in words.1324:______________________________________________________ 3. Which number is even? a) 36 or 41 b) 78 or 53 4. Which number is greater? 3465 or 2352 _________________ 5. Rs 6.30 – Rs 4.05 = Rs _______________. 6. Write the number before 800.______________ 7. 8 tens and 5 ones =_______________ 8. Which number is smaller? 6247 or 6531 _________________ 9. Write the number. One hundred and forty two. ________
- 2. The Institute of ELC The Institute of ELC 10.994 – 7 = ___________ 11.243 + 9 = ___________ 12.Choose the right numeral for fifty. a) 15 ____ b) 50 ____ 13.Rs 88.95 + Rs 60.80 =__________________ 14.2 km 340 m =________________m. 15.183 cm =___________m __________cm. 16.285 × 3 =______________ 17.Arrange these numbers in ascending order. 1111,4276, 4283, 4209 ,________________________________________________ 18.Write the missing number: 1110, 1210, ________ ,1410 ,_______. 19.Circle the odd numbers. 47 ,76 ,105 ,25 ,64 ,31. 20.Write these numbers using Roman numerals. a) 12=_______ b) 15=_______. 21.Write these numbers using Arabic numerals. a) XIII =_______ b) XVI =_______. 22.The short way of writing centimeters is cm. Tick which line is 4 cm. A_________________________B : ______ X_________________Y : ______ 23.9999 -- ___________ = 5678. 24.How many metres in 3 km. __________________. 25.614 ÷ 3 =________________.
- 3. The Institute of ELC The Institute of ELC 26.Two straight lines that will never intersect, no matter how far they are extended are called ______________________. 27.What does the digit 8 stand for:18427 =______________________. 28.A _______________ is a part of a line that has two end points. 29.937 ÷ 4 =_____________. 30.What comes after: a) 18 _______ b) 20 ________. 31.Arrange these numbers in descending order: 3620 ,9540 ,7620 ,4133 _______________________________________________. 32.2641 is ___________ more than 2541. 33.6300 is ___________ less than 7300. 34.Write the name of shapes: __________________. 35.Write > or < in the boxes provided. a) 2200 ____ 3300. b) 6600 ____ 6500. 36.Write in kilograms and grams. a) 1290 g. ____ kg ____ g. 37.Convert in grams. a) 9 kg 100 g. = _________g. b) 7 kg 670 g = ___________ g. 38.How many centimeters in 2 m.___________ cm 39.How many millimeters in 4 cm.___________ mm. 40.Tick mark the correct option in each questions.