Question

1. hasil dari (15 × 45) + (15 × 55) adalah...


2. Taksiran baik dari 78×37 adalah...


3.(25 × 750) + (25×250) =


4.275 × 628 berapa taksiran rendahnya adalah...


5.890 = n×15 berapa nilai n ...


6. (48 × 72) + (48 _ n) = 4.800
berapa nilai n ....

Answer 1

1. ( 15 × 45 ) + ( 15 × 55 ) = 1500
( 675. ) + ( 825. ) = 1500

2. 78 × 37= 2886 = 3000

3. ( 25 × 750) + ( 25 × 250) = 25000
( 18750 ) + ( 6250 ) = 25000

4. 275 × 628 = 172700 =170000

5. 890 = n ×15 = 890 ÷ 15 = 59.33

6. ( 48 × 72 ) + ( 48 × n ) = 4800
( 3456. ) + ( 4800 - 3456 = 1344 ÷ 48 = 28 ) = 28