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Ch. 2 Lessons 2.1-2.4 Flashcards | StudBud
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Ch. 2 Lessons 2.1-2.4
Ch. 2 Lessons 2.1-2.4
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1
Estimate: 30 x 4
1,600
12
120
12,000
2
4 x ? = 32,000
80,000
800
80
8,000
3
Multiply: 900 x 4
360
3,600
5,400
904
4
There are 5 times as many boys as girls. If the total is 35, how many girls are there?
175
155
6
7
5
Write this as an equation: 18 is 3 times more than 6.
3 x 3 = 18
3 =18 x 6
3 x 18 = 6
18 = 6 x 3
6
What does the word PRODUCT mean?
answer to an addition problem
to multiply two large numbers together
something you put in your hair
answer to a multiplication problem
7
Estimate: 65 x 3
2,000
2,100
210
1,600
8
Whenever a multiplication problem asks you to estimate, what are the steps you need to do?
Multiply then Round
Add then Round
Round then Multiply
Round then Add
9
Estimate: 28 x 5
1,500
15
165
150
10
Multiply: 600 x 4
240
2,400
24,000
360
11
Multiply 4 x 200
80
800
200
8,000
12
A school has 5 rooms. Each room has 5 tables. 3 kids are at each table. How many kids total?
28
75
15
13
13
Multiply: 8 x 5,000
40
400
40,000
4,000
14
Multiply using box method: 54 x 5=
270
250
150
50
