Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
7 × 10 = ______
29 − 10 = ______
46 + 20 = ______
33 + 20 = ______
14 + 10 = ______
72 − 10 = ______
90 − 10 = ______
9 × 10 = ______
1 × 10 = ______
47 + 10 = ______
28 + 20 = ______
63 − 10 = ______
53 + 20 = ______
30 − 10 = ______
35 + 20 = ______
38 − 10 = ______
8 × 10 = ______
87 + 20 = ______
83 + 10 = ______
24 − 10 = ______
