Multiplication
6 x 8 = ?
6 x 8 = 48
9 x 3 = ?
9 x 3 = 27
35 ÷ 5 = ?
35 ÷ 5 = 7
What number sentence is missing from this fact family?
2 x 3 = 6
3 x 2 = 6
6 ÷ 2 = 3
What number sentence is missing from this fact family?
2 x 3 = 6
3 x 2 = 6
6 ÷ 2 = 3
*** The missing number sentence is 6 ÷ 3 = 2
Write the following expression:
10 times the sum of 5 and 3
10 times the sum of 5 and 3
10 x (5 + 3)
60 x 40 = ?
60 x 40 = 2,400
50 x 30 = ?
50 x 30 = 1,500
12,000 ÷ 100 = ?
12,000 ÷ 100 = 120
Make a fact family with these numbers: 3, 4, and 12
3 x 4 = 12
4 x 3 = 12
12 ÷ 4 = 3
12 ÷ 3 = 4
Write the following expression in words:
15 x (20 + 6)
15 x (20 + 6)
Fifteen times the sum of twenty and six
7,000 x 50 = ?
7,000 x 50 = 350,000
21 x 23 = ?
21 x 23 = 483
800 ÷ 20 = ?
800 ÷ 20 = 40
Make a fact family with these numbers: 6, 7, and 42
6 x 7 = 42
7 x 6 = 42
42 ÷ 6 = 7
42 ÷ 7 = 6
Find the value of the following expression:
the sum of 13 fifteens and 7 fifteens
the sum of 13 fifteens and 7 fifteens
(13 x 15) + (7 x 15)
= 20 x 15
= 300
33.2 x 21 = ?
33.2 x 21 = 697.2
3.03 x 402 = ?
3.03 x 402 = 1,218.06
16,000 ÷ 40 = ?
16,000 ÷ 40 = 400
Make a fact family with these numbers: 40, 20, 800
40 x 20 = 800
20 x 40 = 800
800 ÷ 40 = 20
800 ÷ 20 = 40
Compare the two expressions using <, >, or =.
6 x (25 x 4) 100 x 7
6 x (25 x 4) < 100 x 7
because 25 x 4 = 100
and 6 100's is less than 7 100's
Round the factors and estimate the product:
656 x 206 ≈ ?
656 x 206 ≈ 700 x 200
and
700 x 200 = 140,000
783 x 42 = ?
783 x 42 = 32,886
Estimate the quotient for the following problem:
9,327 ÷ 32 ≈ ?
9,327 ÷ 32 ≈ 9,000 ÷ 30
and
9,000 ÷ 30 = 300
Make a fact family that includes the following two numbers, plus a third number of your choice: 25, 50
(Various answers possible)
Compare the two expressions using <, >, or =.
45 elevens - 3 elevens 42 x 11
45 elevens - 3 elevens = 42 x 11
because 45 - 3 = 42