Το καλάθι σου είναι άδειο.
PRACTICE
{{exercise_number}}. Calculate the product.
3·200=
2·400=
4·100=
3·300=
5·200=
2·30=
50·10=
8·20=
9·40=
70·10=
27·10=
48·10=
91·10=
53·10=
75·10=
{{exercise_number}}. Which is greater? Write the correct relational signs in the squares.
36 \latex{\times} 7
46 \latex{\times} 7
67 \latex{\times} 9
67 \latex{\times} 7
41 \latex{\times} 3
51 \latex{\times} 5
57 \latex{\times} 10
7 \latex{\times} 100
19 \latex{\times} 3
19 \latex{\times} 6
24 \latex{\times} 8
48 \latex{\times} 4
72 \latex{\times} 10
102 \latex{\times} 7
69 \latex{\times} 10
7 \latex{\times} 100
196 \latex{\times} 5
5 \latex{\times} 159
{{exercise_number}}.
a)
Zita bought 8 packets of biscuits containing 12 each, Leslie bought 4 packets containing 24 each. Who's got more biscuits?
b)
Charlie's place of work is 17 km from his home. How many kilometres does he travel between
the two places in 5 days?
How many kilometres does he travel a week
when he takes 2 days off work?
the two places in 5 days?
How many kilometres does he travel a week
when he takes 2 days off work?
c)
Lilla and Annie bought 2 buns each. Lilla's were
filled with chocolate, Annie's with jam. How much
did they pay if one chocolate bun cost 140 euro and the jam-filled one cost 130 euro?
filled with chocolate, Annie's with jam. How much
did they pay if one chocolate bun cost 140 euro and the jam-filled one cost 130 euro?
{{exercise_number}}. Do the multiplication on paper. Estimate first.
124·4
132·3
149·2
256·3
489·2
Est:
Est:
Est:
Est:
Est:
{{exercise_number}}. Fill in the table.
: The greatest two-digit odd number.
: The smallest three-digit even number
formed from the digits 4, 1 and 3.
formed from the digits 4, 1 and 3.
: The greatest number the value of which rounded to the nearest ten is 80.
=
=
=
the number
2 times
3 times
4 times
{{exercise_number}}. Solve the following word problems.
a) There are 125 marbles in one box. How many marbles are in 5 boxes?
b) Annie has 4 jigsaw puzzles of 244 pieces each. How many pieces in total are there in the 4 puzzles?
c) The distance between Cambridge and Oxford is 94 km. How many kilometres does the coach travel each day if it makes one return journey in the morning and one in the evening?
d) One bag of washing powder weighs 275 dkg. What is the weight of 3 bags of washing powder?
{{exercise_number}}. How much did the drawing equipment cost for the children?
Janet:
Simon:
Alan:
Rob:
€
€
€
€
€5
€3
€4
{{exercise_number}}. a) Do the multiplication.
423·2
257·3
164·4
317·2
239·2
Write the products in the appropriate part of the Venn diagram.
Complete the statements with words that apply to the fields marked.
b)
c)
These are greater than 500
numbers.
These are
than 500
numbers.
These are
than 500
numbers.
even number
greater than 500 number
{{exercise_number}}. Write the missing numbers in the squares.
243·
2 1·3
9·5
·4
27·
486
693
995
568
8 9
{{exercise_number}}.
Eve multiplied a three-digit number by 2, but erased the product and the digit in the tens' place by mistake. Write the appropriate letters in the squares. A: certain, B: possible, C: impossible.
2 5·2
The missing digit of the factor is 3.
The product is greater than 500.
The product is at least 410.
The product is an even number.
The product is an odd number.
The digit 4 is in the hundreds' place.