304.
Write the algebraic expression.
‘A plus 7’ can be written as .
305.
Write the algebraic expression.
‘16 plus B’ can be written as .
308.
Write the algebraic expression.
‘10 multiplied by E’ can be written as .
309. Write the algebraic expression.
‘F multiplied by 16’ can be written as .
310.
Write the algebraic expression.
‘G divided by 5’ can be written as .
311.
Write the algebraic expression.
‘18 divided by H’ can be written as .
313.
Write the algebraic expression.
‘Divide the sum of K and 3 by 4’ can be written as .
314.
Write an algebraic expression and find the value of A mentally.
Jimmy has 10 marbles. Jenny has A marbles. They have 28 marbles balls altogether.
Algebraic expression: ;
A = .
315.
Write an algebraic expression and find the value of B mentally.
Sammy has B dollars. David has 4 dollars more than Sammy. David has 19 dollars.
Algebraic expression: ;
B = .
318.
Write an algebraic expression and find the value of E mentally.
A pack of instant noodles weighs E grams. 5 packs of instant noodles weigh 600 grams.
Algebraic expression: ;
E = .
319.
Write an algebraic expression and find the value of F mentally.
A box of drawing pins contains 50 pieces. F boxes contain 300 pins.
Algebraic expression: ;
F = .
320.
Write an algebraic expression and find the value of G mentally.
Mr. Lam spent 100 dollars on G boxes of ice cream. Each box costs 25 dollars.
Algebraic expression: ;
G = .
321.
Write an algebraic expression and find the value of H mentally.
May divided H beads into 12 equal parts. Each part has 6 beads.
Algebraic expression: ;
H = .
322.
Write an algebraic expression.
A mango costs a dollars. 8 mangos cost altogether dollars.
323.
Write an algebraic expression.
A piece of bread costs 3 dollars.
y pieces of bread cost altogether dollars.
324.
Write an algebraic expression.
A roll of ribbon is 2 metres long. d rolls of ribbon are altogether
metres long.
325.
Write an algebraic expression.
A rectangle is a cm long and b cm wide. Its area is cm2.
326.
Write an algebraic expression.
There are 20 red balloons and T yellow balloons.
There are altogether balloons.
330.
Write an algebraic expression.
There are 5 cocks and P hens in a farm.
There are altogether chickens.
331.
Write an algebraic expression.
There are M tropical fish in a tank. There are 8 more goldfish than tropical fish. There are goldfish in the tank.
332.
Write an algebraic expression.
There are 2 pots of orchid. There are N more pots of camellia than orchid. There are pots of camellia.
336.
Write an algebraic expression.
There are 20 paper cups. cups are left after using F cups.
337.
Write an algebraic expression.
The perimeter of a square is A cm. The length of its side is cm.
338.
Write an algebraic expression.
There are W cherries. They are exactly divided into bags of ten each. There are cherries in each bag.
339.
Write an algebraic expression.
Some pupils made G red flags. The number of red flags is 2 times that of yellow flags. They have made yellow flags.
340.
Write an algebraic expression.
There are altogether K pairs of socks in 3 boxes.
There are pairs of socks in each box on average.
341.
Write an algebraic expression.
There are altogether pieces of chocolates.
342.
Write an algebraic expression.
This orange weighs g.
344.
Write an algebraic expression.
Each toy car weighs kg on average.
346.
Write an algebraic expression.
There are altogether paper clips.
347.
Write an algebraic expression.
Each diamond weighs grams on average.
348.
Write an algebraic expression.
There are altogether sausages.
814. Find the value of each of the letters mentally and link them to the answers.
6 + B = 12
C – 2 = 8
4 ´ F = 20
28 ¸ H = 4
820.
Write an algebraic expression and find the value of C mentally.
Each cat lead is C cm long. A dog lead is 6 cm longer than a cat lead. A dog lead is 19 cm long.
Algebraic expression: = ;
C = .
822.
Write an algebraic expression and find the value of B mentally.
A piece of bone cost 10 dollars at first. It is on sale and is B dollars cheaper. It now costs 8 dollars.
Algebraic expression: = ;
B = .
823.
Write an algebraic expression and find the value of F mentally.
A can of cat food costs F dollars. 3 cans cost 60 dollars altogether.
Algebraic expression: = ;
F = .
825.
What does each child say? Write the algrbraic expressions.
(a)
(b)
(c)
826. Write an algebraic expression by observing the picture.
There are altogether litres of soft drinks.
827. Write an algebraic expression by observing the picture.
weighs grams.
828. Write an algebraic expression by observing the picture.
There are altogether pieces of biscuits.
830. Write the algrbraic expression for each question.
(a) D plus 4 _ + _
(b) 13 plus F
831. Write the algrbraic expression for each question.
(a) T minus 6 _ – _
(b) Subtract G from 8
832. Write the algrbraic expression for each question.
(a) 12 multiplied by R __ R
(b) S multiplied by 5
833. Write the algrbraic expression for each question.
(a) 24 divided by V
(b) W divided by 3
984. Write the algrbraic expression for each question.
(a) m plus 18
(b) The sum of 16 and n
985. Write the algrbraic expression for each question.
(a) Subtract k from 13
(b) p minus 17
986. Write the algrbraic expression for each question.
(a) A multiplied by 34
(b) B times 26
987. Write the algrbraic expression for each question.
(a) 42 divided by g
(b) Y divided by 18
988. Look at the picture and fill in the blanks.
(a) A box of apples costs $ .
A box of oranges costs $ .
A box of oranges is $ more expensive than that of apples.
(b) A box of pears costs $ .
A box of apples costs $ .
The total cost to buy one box each is $ .
(c) A hawker divides a box of oranges into 14 bags equally. The cost of each bag is $ .
(d) The cost of a box of mangos is 3 times that of pears. A box of mangos costs $ .
989. Fill in the blanks with appropriate algebraic expressions. (Only one algebraic symbol can be used for all algebraic expressions.)
There are 148 chickens in a farm.
of them are hens. The remaining are cocks. There are cocks in the farm.
990. Fill in the blanks with appropriate algebraic expressions. (Only one algebraic symbol can be used for all algebraic expressions.)
A can of milk power can make 32 glasses of milk after adding water. If each glass of milk contains mL, a can of milk power can make altogether mL of milk.
991. Fill in the blanks with appropriate algebraic expressions. (Only one algebraic symbol can be used for all algebraic expressions.)
A pencil case costs 16 dollars.
It is dollars cheaper than a pencil box.
A pencil box costs dollars.
992. Look at each value d represents. Complete the table below.
d / 0 / 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9(a) / d + 8
(b) / 31 – d
(c) / 12d
993. Fill in the blanks with appropriate algebraic expressions. (Only one algebraic symbol can be used for all algebraic expressions.)
A dozen of pencils cost dollars.
One pencil costs dollars.
994. List the equation based on the information given and then find the weight of each kind of fruit.
(a) weighs R grams, Equation:
is 48 grams heavier than . R =
weighs grams.
(b) weighs P grams, Equation:
is 313 grams lighter than . P =
weighs grams.
(c) weighs M grams, Equation:
The weight of is 2 times that of . M =
weighs grams.
(d) weighs W grams, Equation:
The weight of is of . W =
weighs grams.