What's the number?
What form is this number written in? 174
a) expanded form
b) word form
c) standard form
c) standard form
Draw a proof drawing for 187
1 hundred 8 tens 7 ones
8 + 8=
9 + 8=
20 + 6=
16
17
26
22+64+37=
123
Help puzzled penguin compare numbers
< = >
131 ___ 113 187 ___ 187
98 ___ 109 145 ___ 154
131 > 113 187 = 187
98 < 109 145 < 154
100+50+6
156
Draw a proof drawing for 107
Write 107 in expanded form
100+7
11 - 4=
9 - 5 =
20 - 7 =
7
4
13
35+43+22=
100
Puzzled penguin has 1 dime, 1 nickel and 1 penny. He says he has 21 cents. Is this true? If not, how much money does puzzled penguin have?
16 cents
Write 132 in expanded form
100+30+2
Draw a proof drawing for 28 + 34 and solve.
62
12 - 6 =
33 + 11 =
18 - 17 =
14
44
1
55+11+73+21=
160
Puzzled penguin solved 38+46=74. Did he make a mistake? If so, what was his mistake?
one-hundred forty seven
Write this number in standard form
147
Draw a proof drawing for 73 + 88 and solve.
161
57 + 12 =
28 + 69 =
16 - 2=
69
97
14
74+35+45+17=
171
Did puzzled penguin make a mistake?
48 + 43 = 811
Yes, puzzled penguin made a mistake. He put 11 in his ones place value instead of creating a new group of ten and putting it in the tens place value. The correct answer is 91.
Puzzled penguin says 129 written in expanded form is 100+29. Is he correct? Why or why not?
No, puzzled penguin is not correct. You have to write the tens and ones separately. 129 in expanded form is 100+20+9.
Draw a proof drawing and solve. Write the answer in standard form and word form.
Fifty-four + sixty-seven
121
one hundred twenty-one
37 + 21=
17 - 7=
124 + 16=
38 - 17=
58
10
140
21
14+39+70+57=
180
Help puzzled penguin count his money.
He has 5 dimes, 5 nickels and 5 pennies.
How much money does puzzled penguin have?
80 cents.