සා/පෙළ ගණිතය 2010 ප්‍රශ්න පත්‍රය

Multiply two unit fractions

පිළිතුර: 1/10

💡 ප්‍රශ්නයේ අදහස: භාග ගුණ කිරීම යනු කොටසක කොටසක් ගැනීමයි: පහෙන් එකක අඩක්.

1. 1ලව: 1 × 1 = 1.
2. 2හර: 2 × 5 = 10.
3. 3පිළිතුර 1/10.

✅ 1/5 (= 0.2) න් අඩක් 0.1 = 1/10.

Solve a one-step linear equation

පිළිතුර: x = 8

💡 ප්‍රශ්නයේ අදහස: 3 ක් අඩු කළ විට 5 ලැබෙන සංඛ්‍යාව කුමක්ද? අඩු කිරීම ඉවත් කරන්න.

1. 1x න් 3 අඩු කර ඇත.
2. 2දෙපසට 3 එකතු කරන්න: x = 8.
3. 3පරීක්ෂාව: 8 − 3 = 5.

✅ 8 ආදේශ කළ විට 5. නිවැරදියි.

Multiply a decimal by a whole number

Equal angles making up a right angle

Price of one item from price of three

Power of a power with a negative index

Missing value given the mode

Area of a square of side 5

Shade the girls of Grade 7 on a Venn diagram

Plot a point on a coordinate grid

Side of parallelogram from triangle area between parallels

Solve an index equation with a reciprocal power of two

Diameter of a circle from its area

Angles in a figure with parallel sides

Flow rate per minute from a rate per 10 seconds

Name two pairs of congruent triangles in an isosceles triangle

Factorise using a common factor and difference of squares

Exterior angle of a cyclic quadrilateral

Find a set from a union with a disjoint set

Positive integers satisfying a linear inequality

Name equiangular triangles and write an equal ratio

Workers needed to finish houses in given days

Relation between chords equidistant from the centre

Name a solid from its net and its dimensions

Bottles filled from litres of oil and remainder

Common ratio of a GP from first and fourth terms

Overlap of two equal squares as a fraction of the figure

Count numbers that are multiples of both 2 and 5

Describe a point as an intersection of two loci

Positive integers whose reciprocals add to 5/12

Fraction of a mixed number; bicycle marked price, discount, profit percent

Juice mixture: ratio, water percentage, scaled amount, new ratio after adding water

Room floor area, semicircular alcove area, tile layout and number

Tree diagram for school selection and medium; Venn diagram of exam passes

Pie chart of marks: smallest group, total, sector angle, histogram

Rent income, repairs and rates; dividend percentage from share income

Graph of y=2-x(x-4): max, interval, related minimum, estimate root six

Equation with algebraic fractions; factorise by grouping; solve quadratic to 2 d.p.

Tower height and angle by trig; scale, real distance, reverse bearing

Rectangle perimeters give simultaneous equations; matrix 2A - B

Cylinder melted into a square prism: show height; log-table simplification

Seats per row as an AP: term, term number, sum, test a claim

Construct right triangle, copied angle, parallel line; name equal-area triangle

Grouped library-book data: midpoints, fx, mean, estimate, test a claim

Grafted plants Venn diagram: shade, fill, count, probability

Isosceles triangle with parallel line: equal angles, congruence, quarter length, parallelogram

Two equal circles through each other's centres; Pythagoras difference of squares