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 = ______
73 + 20 = ______
8 × 10 = ______
90 − 10 = ______
6 × 10 = ______
89 + 20 = ______
42 + 20 = ______
12 + 20 = ______
14 + 20 = ______
39 − 10 = ______
66 − 10 = ______
77 + 10 = ______
49 + 10 = ______
48 − 10 = ______
2 × 10 = ______
50 − 10 = ______
33 + 10 = ______
42 − 10 = ______
72 + 10 = ______
25 − 10 = ______
