Properties
Use the commutative property to find g.
3.4 + 5.2 = 5.2 + g
g = 3.4
Round to the nearest whole number.
34.789
35
31.3 + 16.4
47.7
> < =
1.3 1.7
<
Ms. Gutierrez needs 3.6 meters of ribbon to make a bow. She cuts the ribbon off a roll that has 26.45 meters of ribbon. How many meters of ribbon are left on the roll?
26.45 - 3.6=
22.85 meters
Use the commutative property to find g.
6.43 + 15.7 = 15.7 + g
g = 6.43
Round to the nearest tenth.
51.736
51.7 or 51.700
29.32 - 7.84
21.48
> < =
4.930 4.530
>
Ms. Gutierrez runs for 5.38 miles on Monday and 2.4 miles on Tuesday. How many miles did she run in all?
5.38 + 2.4 =
7.78 miles
Use the associative property to solve.
5.25 + 4.3 + 3.2 + 1.75 + 6.8
(5.25 + 1.75) + (3.2 + 6.8) + 4.3
7 + 10 + 4.3
21.3
Round to the nearest hundredth.
178.995
179 or 179.000
1,346.92 + 7.8
1,354.72
> < =
0.50 0.5
=
A bird flies 107.32 meters from its nest and catches a bug. The bird flies the same distance back to its nest. How many meters does the bird fly?
107.32 + 107.32
214.64
Use the associative property to solve.
4.30 + 1.3 + 2.4 + 2.70 + 9.6
(4.30 + 2.70) + (2.4 + 9.6) + 1.3
7 + 12 + 1.3
20.3
What place value is 267.139 being rounded to in the following numbers:
267.1
300
270
267.1 ------ tenths
300 --------hundreds
270 -------- tens
721.320 - 62.587
658.733
> < =
0.03 0.30
<
Ms. Gutierrez and Ms. Gibson had a contest to see who could hold their breath the longest. Ms.Gutierrez held her breath for 15.36 seconds. Ms. Gibson held her breath for 15.23 seconds. Estimate and then find how much longer Ms. Gutierrez held her breath.
Round each answer to the nearest tenth. Then find the difference. Then solve.
15.36 --- 15.4
15.23 --- 15.2
15.4 - 15.2 = 0.2 (Estimate)
15.36 - 15.23 = 0.13 (Solve)
Use the distributive property to solve.
5 x (4 + 8)
5 x (4+8)
(5 x 4) + (5 x 8)
20 + 40
60
Write 14,569.432 in word form, expanded form, and powers of 10.
Word Form: fourteen thousand, five hundred sixty-nine and four hundred thirty-two thousandths
Expanded Form:
10,000 +4,000 + 500 + 60 + 9 + 0.4 + 0.03+ 0.002
Powers of 10:
(1 x 10,000) + (4 X 1,000) + (5 X 100) + (6 X 10) + (9 X 1) + (4 X 1/10) + (3 X 1/100) + (2 X 1/1000)
Estimate.
$234.27 + $ 15.83
$234.27 ---- $234
+ $15.83 ----$16
--------------------------
$250
> < =
283 2.83
>
A giraffe is 14.29 feet tall. It is reaching for leaves on a tree by looking up and extending its tongue. The giraffe’s tongue is 1.26 feet long.
Part A: How far can the giraffe reach when it looks up and extends its tongue?
Part B: How much farther would the giraffe need to reach to eat leaves that are 16 feet above the ground?
Part A: 14.29 + 1.26 =
15.55 feet
Part B: 16 - 15.55 =
0.45 foot