Multiplication
50 x 30 = ?
1,500
3 L = ? mL
3,000 mL
Wooden bat = $49
Metal bat = $74
Glove = $35
Helmet = $22
Mr. Elliot needs 9 helmets and 8 gloves. How much will they cost in all?
9 x 22 = $198
8 x 35 = $280
198 + 280 = ?
= $478
#1
for 100
List the first 6 multiples of 8
8, 16, 24, 32, 40 and 48
80 x 80 = ?
6,400
4,000 mL = ? L
4 L
Wooden bat = $49
Metal bat = $74
Glove = $35
Helmet = $22
Mr. Ballantine wants to buy 6 bats for his team. How much more would it cost for him to buy 6 metal bats than 6 wooden bats?
6 x 74 = $444
6 x 49 = $294
444-294 = ?
= $150
#2
for 200
List all the factor pairs for 84.
1, 84, 2, 42, 3, 28, 4, 21, 7, 12
3000 x 70 = ?
210,000
2 kg = ? g
2,000 g
Wooden bat = $49
Metal bat = $74
Glove = $35
Helmet = $22
Mrs. Bestrin buys 5 wooden bats and gives the cashier $300. How much change does she get?
5 x 49 = $245
300-245 = ?
= $55
#3
for 300
Is 37 a prime or composite number? Explain.
37 is a PRIME number, it has only two factors. 1 and 37.
25 x 6 =?
150
8,000 g = ? kg
8 kg
Borzoi, Raccoon and Sporky drive together from their home to visit their grandparents. Borzoi drives 55 miles, and Raccoon drives two times as far as Borzoi. Then Sporky drives twice as far as Raccoon and Borzoi combined, which gets them to their grandparents house.
How far did Sporky drive?
Borzoi drives 55 miles.
Raccoon drives 110 miles. (55 x 2 = 110)
Answer:
Sporky drives 165 miles (110 + 55 = 165)
#4
for 400
Write 567,403 in expanded form.
500,000 + 60,000 + 7,000 + 400 + 3
36 x 24 = ?
864
1.8 kg = ? g
1,800 g
Mrs. Wolfe is buying a tablet for $582. She paid for the tablet using four $100 bills, 18 $10 bills, and 1 $5 bill. How much did Mrs. Wolfe pay?
Write the number models to show your thinking.
Did she pay the exact amount, too little, or too much? (Explain)
4 x 100 = $400
18 x 10 = $180
1 x 5 = $5
Answers:
Number model: 400 + 180 + 5 = m
= $585
Did she pay the exact amount, too little, or too much?
585 - 582 = $3
She paid too much, she needs $3 back in change.
#5
for 500
Solve using U.S. traditional subtraction.
87,804 - 23,246 = ?
= 64,558