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
68 + 10 = ______
17 + 20 = ______
47 + 10 = ______
76 + 20 = ______
66 − 10 = ______
42 − 10 = ______
14 + 20 = ______
55 + 10 = ______
34 − 10 = ______
37 − 10 = ______
58 + 20 = ______
37 + 10 = ______
95 − 10 = ______
80 − 10 = ______
9 × 10 = ______
79 + 20 = ______
5 × 10 = ______
42 + 10 = ______
43 + 20 = ______
84 − 10 = ______
