Arrays and Repeated Addition
Draw an array to show 3 groups of 5
xxxxx
xxxxx
xxxxx
15
Solve:
(3X2)+(3X10)=
36
Solve multiplication problem:
7 x 8 = ____
56
66 divided by 6
11
Write the whole fact family for 8, 3 and 24
3X8=24
8X3=24
24/3=8
24/8=3
Solve 7+7+7+7+7+7+7 and show the X fact.
49
7X7=49
Solve:
(6X4)+(6X3)=
54 ÷ 9 = 6
Solve 6X7 AND if you know 6X7, what other fact do you know? Write both facts and products.
6X7=42
7X6=42
50 divided by 10 AND if you know this fact, what other division fact do you know? Write both facts.
50/10=5
50/5=10
7X7=?
Find the UNKNOWN, and write the entire fact family.
7X7=49
49/7=7
Draw and array to show 8 groups of 4 and solve.
32
Break the 4 to solve: 4X7
(2X7)+(2X7)=28
(1X7)+(3X7)=28
Solve 600 X 80
600 X 80=48000
28 divided by 4
32 divided by 4
28/4=7
32/4=8
Solve 3X3X2
(3X3)X2=18
(3X2)X3=18
Use the info to create a X fact for how far Bob runs in one week.
Monday: 9 miles
Wednesday: 9 miles
Friday: 9 miles
9X3=27
Break the 6 to solve: 6X9
(5X9)+(1X9)=54
(4X9)+(2X9)=54
(3X9)+(3X9)=54
Solve 80 X 40
80 X 40= 3200
? divided by 7 equals 3
Figure out the UNKNOWN, and write ALL FOUR FACTS in this family.
21/7=3
21/3=7
3X7=21
7X3=21
Solve 7X10X9
(7X10)X9=630
(9X7)X10=630
(9X10)X7=630
Use the array to create a X AND division fact.
XXXXXX
XXXXXX
XXXXXX
XXXXXX
6X4=24
24/4=6
Break the 7 to solve: 7X12
(2X12)+(5X12)=84
(6X12)+(1X12)=84
(3X12)+(4X12)=84
Solve 9 X 1200
9 X 1200=10,800
96 divided by 8
96/8=12
Solve 4X8X5
(4X8)X5=160
(4X5)X8=160
(5X8)X4=160