1.7: Unit 1 Review- Number Sense

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Unit 1 Review: Number Sense

You will now practice all the skills you learned in Unit 1. Check your work using the answer key at the end of the review.

Count the number of things in each picture. Write the number and word name.

Picture	Answer
$club. club, club, club, club, and club. club, club, club.$	Numeral: Word Name:
$diamond, diamond, diamond, diamond, and diamond, diamond, diamond$	Numeral: Word Name:
$heart, heart, heart, and heart, heart, heart$	Numeral: Word Name:
$dot, dot, dot, dot, dot, dot, and dot, dot.$	Numeral: Word Name:
$dot, dot, and dot, dot, dot$	Numeral: Word Name:

Fill in the blanks to make each sentence true. Draw a picture for questions b and e.
1. 46 means _____ tens and _____ones.
2. 25 means _____ tens and _____ ones. Draw your picture below.

c. _____ means _____ tens and _____ ones.
$ten. ten. ten, ten, ten, ten and one, one, one$

d. 138 = _____ hundreds, _____ tens, _____ ones.

e. 231 = _____ hundreds, _____ tens, _____ ones. Draw your picture below.

f. _____ hundreds _____ tens _____ ones =
$hundred, hundred, hundred, and ten, ten, and one, one, one, one, one$

C. Write the place value names (ones, tens, hundreds) for each individual digit.

D. Underline the digit for the place value named.

hundreds, 164
tens, 892
tens, 250
hundreds, 371
ones, 485
ones, 743

E. Write the word names for the numbers.

F. Write the numerals for these word names.

forty-seven
nineteen
sixty-five
thirty-eight
twenty-four
five hundred thirty-five
three hundred sixty
two hundred four

G. Arrange these numbers in order from smallest to largest.

258, 32, 23, 282, 345, 534
452, 208, 27, 335, 635, 155

H. Write <, > or = in each blank as needed.

37 _____ 52
4 _____ 0
349 _____ 394
67 _____ 67

I. Round each number to the nearest ten.

37 ≈ _____
344 ≈ _____
68 ≈ _____
25 ≈ _____
51 ≈ _____
876 ≈ _____

J. How much money do you have?

a. _____ cents

$nickel, nickel, nickel, nickel, nickel, and nickel, nickel, nickel, nickel, nickel, and nickel, nickel, nickel, nickel$

b. _____ dollars

$toonie, toonie, toonie, toonie, and toonie, toonie, toonie, and toonie, toonie, toonie, toonie, and toonie, toonie$

c. _____ cents
$dime, dime, dime, dime, dime, and dime, dime, dime, dime,$

K. Word problems.

Hussein’s fruit stand sold 114 watermelons, 287 honeydew melons and 345 cantaloupes. Round each number to the nearest ten.

Melon	Number	Rounded Number
Watermelons
Honeydews
Cantaloupes

Yi-Min drove her delivery van 106 kilometres on Saturday, 187 kilometres on Sunday and 285 kilometres on Monday. Round each number to the nearest ten.

Kilometres	Number	Rounded Number
Saturday
Sunday
Monday

Answers to Unit 1 Review

1. 9, nine
2. 7, seven
3. 6, six
4. 8, eight
5. 5, five
1. 4 tens, 6 ones
2. 2 tens, 5 ones
3. 63, 6 tens, 3 ones
4. 1 hundred, 3 tens, 8 ones
5. 2 hundreds, 3 tens, 1 one
6. 325, 3 hundreds, 2 tens, 5 ones
1. hundreds
2. tens
3. ones
4. hundreds
5. tens
6. ones
1. 164
2. 892
3. 250
4. 371
5. 485
6. 743
1. seventy-three
2. fourteen
3. five
4. thirty-nine
5. fifty-two
6. four hundred ninety-six
7. eight hundred three
8. six hundred forty
1. 47
2. 19
3. 65
4. 38
5. 24
6. 535
7. 360
8. 204
1. 23, 32, 258, 282, 345, 534
2. 27, 155, 208, 335, 452, 635
1. <
2. >
3. <
4. =
1. 40
2. 340
3. 70
4. 30
1. 70 cents
2. 26 dollars
3. 90 cents

Melon	Number	Rounded Number
Watermelons	114	110
Honeydews	287	290
Cantaloupes	345	350

Kilometres	Number	Rounded Number
Saturday	106	110
Sunday	187	190
Monday	285	290

CONGRATULATIONS!!

Now you have finished Unit 1.

TEST TIME!

Ask your instructor for the Practice Test for this unit.

Once you’ve done the Practice Test,

You need to do the Unit 1 Test.

Again, ask your instructor for this.

GOOD LUCK!

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Unit 1 Review: Number Sense