Το καλάθι σου είναι άδειο.
THE ORDER OF OPERATIONS
{{exercise_number}}. Do the calculations. Pay attention to the order of operations. Complete the sentences.
16 + 23 + 45 =
64 + 23 \latex{ - } 41 =
85 \latex{ - } 76 + 13 =
97 \latex{ - } 56 \latex{ - } 28 =
2 \latex{ \times } 7 \latex{ \times } 7 =
12 \latex{ \times } 5 \latex{ \div } 6 =
96 \latex{ \div } 8 \latex{ \times } 2 =
54 \latex{ \div } 6 \latex{ \times } 3 =
then the operations are done one by one from
If the operations consist only of addition and subtraction, or multiplication and division,
to
.
a)
63 + (19 + 11) =
93 \latex{ - } (18 + 47) =
72 \latex{ \div } (2 \latex{ \times } 4) =
87 \latex{ - } (24 \latex{ - } 14) =
18 \latex{ \div } (9 \latex{ \div } 3) =
13 \latex{ \times } (42 \latex{ \div } 7) =
can change the order of operations.
b)
56 \latex{ - } 4 \latex{ \times } 7 =
75 + 3 \latex{ \times } 8 =
91 \latex{ - } 22 \latex{ \div } 2 =
38 + 54 \latex{ \div } 9 =
11 + 9 \latex{ \div } 9 =
48 \latex{ - } 4 \latex{ \times } 2 =
14 \latex{ \times } 4 \latex{ - } 32 \latex{ \div } 4 =
95 \latex{ \div } 5 + 7 \latex{ \times } 7 =
If the operations do not contain brackets, then do the
and the
first, and then the
and the
.
c)
Zárójel
osztás
összeadás
kivonás
szorzás
{{exercise_number}}. Do the operations. Pay attention to the correct order.
(149+241)·2=
149+241·2=
627-156·2=
(627-156)·2=
{{exercise_number}}. Each pupil could order two tickets for the end-of-term party.
a) At most how many tickets could 216 lower grade and 223 upper grade pupils
order? Mark the operations giving the correct answer with a *. Calculate.
b) How many more tickets could upper grade pupils order than lower grade ones?
= (216+223)\latex{ \times }2
=216\latex{ \times }2+223\latex{ \times }2
= 216+223\latex{ \times }2
= 216+(223\latex{ \times }2)
= 216\latex{ \times }(2+223)
= 216\latex{ \times }2+223
= 223\latex{ - }216\latex{ \times }2
= 223\latex{ \times }2\latex{ - }216\latex{\times }2
= 223\latex{\times }2\latex{ - }216
= 223\latex{- }(216\latex{ - }2)\latex{ \times }2
= 2\latex{ \times }(223\latex{ - }216)
= (223\latex{ - }216)\latex{ \times }2
{{exercise_number}}. Two performances were staged in the theatre. There are 186 seats in the balcony and 264 on the ground floor. All the tickets were sold.
- How many guests in total saw the two performances? Calculate in two different ways.
- How many more guests sat on the ground floor than in the balcony in the two performances? Calculate in two different ways.
{{exercise_number}}.
- Connect the equal amounts without doing the calculation.
b) Write the missing numbers in the squares without doing the calculation.
(173 + 93) \latex{ \times } 3
(456 \latex{ - } 141) \latex{ \times } 2
2 \latex{ \times } (261 + 104)
(261 \latex{ - } 104) \latex{ \times } 2
456 \latex{ \times } 2 \latex{ - } 141 \latex{ \times } 2
261 \latex{ \times } 2 + 104 \latex{ \times } 2
173 \latex{ \times } 3 + 93 \latex{ \times } 3
261 \latex{ \times } 2 \latex{ - } 104 \latex{ \times } 2
(256 \latex{ – } 98) \latex{ \times }
= 256 \latex{ \times } 3 \latex{ - } 98 \latex{\times} 3
3 \latex{ \times } 214 \latex{ - } 3 \latex{ \times } 138 = 3 \latex{ \times } (
\latex{ - } 138 )
(176 +
) \latex{ \times } 5 = 176 \latex{ \times } 5 +12 \latex{ \times } 5
124 \latex{ \times } 7 = 124 \latex{ \times }
\latex{ - } 124
251 \latex{ \times } 3 \latex{ - } 251 = 251 \latex{ \times }
83 \latex{ \times } 8 = 83 \latex{ \times } 5 + 83 \latex{ \times }
{{exercise_number}}.
a) Which numbers did I think of? Write it down with an operation. Calculate.
\latex{ \textcolor{#0089d0}{\bullet} } The sum of 246 and 172, multiplied by 2.
\latex{ \textcolor{#0089d0}{\bullet} } The difference between 946, and 4 times 156.
\latex{ \textcolor{#0089d0}{\bullet} } The difference between 628 and 471, multiplied by 5.
\latex{ \textcolor{#0089d0}{\bullet} } The sum of 7 times 78, and 319.
\latex{ \textcolor{#0089d0}{\bullet} } The sum of 3 times 138 and 5 times 97.
b) What is the difference between 3 times 249 and 4 times 86?
What is the sum of 2 times 248 plus the difference between 916 and 659?
{{exercise_number}}.
- Tim bought 2 soft drinks and 3 bottles of mineral water. One soft drink cost 176 cent and the mineral water cost 138 cent a bottle. How much did Tim pay?
soft drinks
mineral water
total
2\latex{ \times }176
3\latex{ \times }138
? cent
cent
cent
- Sarah bought 6 notebooks costing 128 cent each. How much change did she get back from 1,000 cent?
{{exercise_number}}. Write word problems to describe the following operations.
a)
b)
(248 + 153) \latex{ \times } 2 =
248 + 153 \latex{ \times } 2 =
{{exercise_number}}. Which is greater? Write the correct relational signs in the squares.
(180 + 61) \latex{ \times } 2
180 \latex{ \times } 4 + 61 \latex{ \times } 4
5 \latex{ \times } 183 \latex{ - } 91
5 \latex{ \times } (183 \latex{ - } 91)
900 \latex{ - } 6 \latex{ \times } 90
8 \latex{ \times } 90 \latex{ - } 4 \latex{ \times } 90
23 \latex{ \times } 3 \latex{ \times } 4
156 \latex{ \times } 5 + 156
79 \latex{ \times } 9
80 \latex{ \times } 9 \latex{ - } 9
165 \latex{ \times } 6
23 \latex{ \times } (197 \latex{ - } 185)