Write the numbers in the correct order.
89, 84, 93
84, 93, 89
Kourtney wrote a number in expanded form: 90 + 4. What is the standard form of her number?
94
Which of the following are ways to make 43?
Ⓐ 40 𝑡𝑒𝑛𝑠 + 3 𝑜𝑛𝑒𝑠
Ⓑ 30 𝑜𝑛𝑒𝑠 + 3 𝑜𝑛𝑒𝑠
Ⓒ 3 𝑡𝑒𝑛𝑠 + 13 𝑜𝑛𝑒𝑠
Ⓓ 3 𝑡𝑒𝑛𝑠 + 3 𝑜𝑛𝑒s
A. and C.
What number does the model show?
42
What is one less than 98?
97
Find 16-7
Write a related addition fact to help
7+9=16
What is 74 in expanded form?
70 + 4
50-20=
30
_____ tens and _____ ones is 90
9 tens and 0 ones is 90
What number is seventy- seven?
77
89
Write each number in standard form and as an equation in expanded form.
Standard form: 87
Expanded form: 80+7
Which is true?
A. 29>33
B. 39<34
C. 70<70
D. 93>39
D. 93>39
What is 80+5 in standard form?
85
What is 1 less than 34?
33
79-19=
60
10-3 =
7
Is 49 greater than (>), less than (<) or equal (=) to 35.
Greater than 49 > 35
What is 10 more than 73?
83
A. 99> 45
B. 50< 35
C. 45=47
D. 34=43
A. 99>45
Complete the chart below to show one more, one less, ten more and ten less than 33.
23
32 33 34
43
Students should use manipulatives.
What numbers should go in the blanks of the given equations below to make them true? Choose one statement and explain how you know you are correct.
22 − 10 =⬜
⬜ = 1 + 62
1 + ⬜ = 70
⬜ = 49 − 1
22-10= 12
63= 1+ 62
1+69= 70
48= 49-1
Students may prove their statements are true with the use of manipulatives; number lines, hundreds charts.
Students may also use fact families. Part/ Part = Whole or Whole- part=part
37- 13=
24
Using the numbers 99, 79 or 89, make true statements.
______ > ______
______ < ______
______ > ______
______ = ______
99> 89
79< 89
89> 79
79=79 or 89=89 or 99=99
1 more than 78 is _____.
1 less than 78 is _____.
10 more than 78 is _____.
10 less than 78 is _____.
79
77
88
68