In math, we have been spending a great deal of time proving our work. Sometimes we do it by using the inverse operation, drawing pictures, estimating and even making simpler problems to solve. Come up with a problem you can solve in three different ways and add it as this week's blog post.

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(kx3)+2=5 K=1 Sam has 3 equal groups of (k) balls. Then he adds two more balls. He has 5 balls. How many balls are in 1 group.

ReplyDelete1_ (5-2):3=1

2_ 1x3=3+2=5

3_ x x x +x x=xxxxx Christian

Bobs yard is 10 yards long and 29 yards wide. What is the area of Bobs yard.

ReplyDelete10x29=290

(10x20)+(10x9)=290

(10x30)-(10x1)=290

Anna

Sid had a question 43x40. What was the answer.

ReplyDelete1720

40(40+3)=1720

(40x3)+(40+3)=1720

Jenna will buy a pool. She wants it to be 20 yards wide and 35 yards long. What will the area of the pool be?

ReplyDeleteAnswer:

1. 20 x 35 = 700 yards

2. 20 x 35 = 20 (30 + 5) = 700 yards

3. 20 x 35 = (20 x 40) - (20 x 5) = 700 yards

Vela

Vela's pool is 25 yards long and 15 yards wide. What is the area of Vela's yard?

ReplyDelete25x15=425

(25x10)+(25x5)=425

(25x30)-(25x50)=425

Christian cut 20 trees per day for 2 days and he cut 30 trees per day for the next 2 days

ReplyDelete1) 20+20+30+30=100

2) 2x20 + 2x30 =100

3) you can find the average tree cut per day and multiplied by 4 days

20+30=50

50 : 2 = 25x4=100

Ava has a garden it is 18 feet long and 14 feet wide what is the area of the garden?

ReplyDelete18x14=252 feet

10x8+4x10=252 feet

14x10+14x8=252 feet

2(2+5)=x

ReplyDelete(2+5).2=x

(2.5)+(2.2)=x

X=20

Carly has a pool that is 34 feet wide and 20 feet tall. What is the area of the pool?

ReplyDelete1. 20 x 34= 680

2. 20(30+4)=680

3. (20x40) - (20x6)=680

The answer is 680 feet

13 x 101 = 13 x(100+1) =(13x100)+(13x1)=1300 + 13=1313

ReplyDelete101x13=101x(10+3)=(101 x 10)+(101 x 3)= 1010 + 303= 1313

101

x13

1,313

Paris had 40 rocks and 53 pebbles,she wants to multiply 40x53 how can she solve it?

ReplyDelete1.40x53=2,120

2.(40x50)+(40x3)=2,120

3.(40x20)+(40x3)+(40x30)=2,120

the answer is 2,120

Saad has 50 toys 49 batteries. He wants to find out how many possessions he has. He wants 3 ways.

ReplyDeleteAnswer

50•49=2450

(50•40)+(50•9)=2450

(50•50)-(50•1)=2450

Wesley has a desk that is 49 inches wide and 60 inches length. What is the area.

ReplyDelete1. 60X49=2940

2. 60X(40X9)=2940

3. (60X40)+(60X9)=2940

Megan has a book that is 65 centimeters long and 89 cm wide. What is the area?

ReplyDelete80x60=4800

80x5=400

60x9=540

5x9=45

=5785 cm

DJ has 37 photos. Bibby has 40 times as many photos. how many photos does Bibby have?

ReplyDelete37.40=1480 photos

40(30+4)=1480 photos

34(10+30)=1480 photos

(40.30)+(40.7)=1480 photos