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
67 + 10 = ______
79 + 10 = ______
58 + 10 = ______
45 − 10 = ______
81 − 10 = ______
5 × 10 = ______
52 − 10 = ______
88 + 10 = ______
84 − 10 = ______
49 − 10 = ______
16 + 20 = ______
47 + 20 = ______
9 × 10 = ______
42 + 20 = ______
85 − 10 = ______
25 + 20 = ______
36 + 20 = ______
75 + 20 = ______
75 − 10 = ______
74 + 10 = ______
