That's Simple! Multiply and Divide with Multiples of 10
What is 16 x 10?
What is 160
Use the Distributive Property to do mental math
7 x 14
What is 7 x 10 + 7 x 4
70 + 28
98
Multiplying by 1/2 is the same as dividing by what number?
What is 2
If 1 divided by 1/4 = 4, what does 5 divided by 1/4?
What is 20
5 times 4
What is 3 x 4.1?
What is 12.3
3 times 4 = 12
3 times 0.1 = 0.3
12 + 0.3 = 12.3
What is 321 divided by 10?
What is 32.1
Use the Distributive Property to multiply
6 x 54
What is 6 x 50 + 6 x 4
300 + 24
324
What is 1/3 x 63?
What is 21
If 1 divided by 1/8 is 8, what is 4 divided by 1/8?
What is 4 times 8 = 32
What is 9 x 4.2?
What is 37.8
9 x 4 = 36
9 x 0.2 = 1.8
36 + 1.8 = 37.8
What is 23.14 x 100?
What is 2314
Use the Distributive Property to Multiply
8 x 43
What is 8 x 40 + 8 x 3
320 + 24
344
If 1/5 x 20 is 4, what is 2/5 x 20?
What is 8
1/5 of 20 = 4
so 2/5 of 20 is 2 times 4 = 8
What is 42 divided by 1/3?
What is 126
1 divided by 1/3 = 3
42 divided by 1/3 = 42 times 3 =
40 times 3= 120
2 times 3 = 6 120 + 6 = 126
What is 6 x 8 1/2?
What is 51
6 times 8 = 48
6 times 1/2 = 6/2 = 3
48 + 3 = 51
What is 0.78 x 1000?
What is 780
7 x 32
What is 7 x 30 + 7 x 2
210 + 14
224
If 1/8 of 80 = 10, what is 7/8 of 80?
What is 70
1/8 of 80 = 10
so 7/8 of 80 = 7 times 10 = 70
What is 8 divided by 2/5?
Hint: What is 8 divided by 1/5
What is 20
8 divided by 1/5 = 8 x 5 = 40
2/5 is twice as big as 1/5 so
8 divided by 2/5 is half as large = 20
What is 5 x 2 1/3?
What is 13 2/3?
5 x 2 = 10
5 x 2/3 = 10/3 = 3 1/3
10 + 3 1/3 = 13 1/3
What is 0.065 multiplied by 1000?
What is 65
Use the Distributive Property to multiply
3 x 132
What is 3 x 100 + 3 x 30 + 3 x 2
300 + 90 + 6
396
if 1/6 of 300 = 50, what is 5/6 of 300?
What is 250
1/6 of 300 = 50
so 5/6 of 300 = 5 times 50 = 250
What is 12 divided by 2/3?
Hint: What is 12 divided by 1/3?
What is 18
12 divided by 1/3 = 36
2/3 is twice as big as 1/3 so there are half as many 2/3's in 12
36 divided by 2 = 18
What is 7 x 8 2/7?
What is 58
7 times 8 = 56
7 times 2/7 = 14/7 = 2
56 + 2 = 58