Math with Miss Unangst

100 100 100 100 100

200 200200200200

300 300 300 300 300

400 400 400 400 400

500 500 500 500 500

Let’s Sum It Up

Over or Under?

What’s the Difference?

Follow the Rules

Grab Bag

Let’s Sum It Up– 100

Round to the nearest hundred to estimate each sum.

236 + 492 __________

200 + 500= 700

Let’s Sum It Up - 200

Round to the nearest ten to estimate each sum.

18 + 36 _________

20 + 40= 60

Let’s Sum It Up -300

Round to the nearest hundred to estimate each sum.

126 + 223 _______

100 + 200= 300

Let’s Sum It Up- 400

Round to the nearest ten to estimate each sum.

145 + 239 _______

150 + 240= 390

Let’s Sum It Up -500

Estimate the sum.

167 + 449 ________

170 + 450= 620

Over or Under? - 100

Estimate each sum by rounding. Then tell whether each

estimate is an overestimate or an underestimate.

17 + 49 ___________

20 + 50= 70 overestimate

Over or Under? -200

Estimate each sum by rounding. Then tell whether each

estimate is an overestimate or an underestimate.

71 + 13 __________

70 + 10= 80 underestimate

Over or Under? -300

Estimate each sum by rounding. Then tell whether each

estimate is an overestimate or an underestimate.

818 + 139 ________

820+140=960 overestimate

Over or Under? -400

Estimate each sum by rounding. Then tell whether each estimate is

an overestimate or an underestimate.

162+72 ______

160+70=230 underestimate

Over or Under? -500

Estimate each sum by rounding. Then tell whether each

estimate is an overestimate or an underestimate.

164+212 _____

160+210=370 underestimate

What’s the Difference?– 100

Round to the nearest hundred to estimate each difference.

236-119 _______

200-100=100

What’s the Difference?– 200

Round to the nearest ten to estimate each difference.

677-421 ________

680-420 = 260

What’s the Difference?– 300

Round to the nearest hundred to estimate each difference.

558-321 ___________

600-300= 300

What’s the Difference?– 400

Round to the nearest ten to estimate each difference.

296-95 ______

300-100= 200

What’s the Difference?– 500

Remy’s music teacher requires 450 min of practice each

month. Remy practiced 239 min the first three weeks this

month. Estimate how many minutes he has left to practice.

450-240= 210 minutes

Follow the Rule -100

Complete the table. Then write a rule for the table.

Subtract 3 15;0

IN 16 9 4 18 3

OUT 13 6 1

Follow the Rule 200

Complete the table. Then write a rule for the table.

Add 4 16;4

Follow the Rule 300

Jon put in 12 and

got out 17. Then he put in 1 and

got out 6. What rule was he using?

Add 5

Follow the Rule 400

Elton uses the rule Subtract 6 for

his table. If he puts in 18, what will

he get out?

12

Follow the Rule 500

Complete the table. Then write a rule for the table.

Add 10 72;109

IN 16 31 27 62 99

OUT 26 41 37

Grab Bag - 100

(4 + 2) + 1= _____

7

Grab Bag - 200

Complete each fact family

3+6= ___ 9-____=3

6+ ___=9 ____-3=6

3+6=9 9-6=3 6+3=9 9-3=6

Grab Bag - 300

Find the missing number

7 + ______ = 13

7 + 6 = 13

Grab Bag - 400

3 + 0 = 0 + _____

3

Grab Bag - 500

Find the missing number.

8 + ____ = 12

8 + 4 = 12