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
51 + 20 = ______
36 − 10 = ______
40 + 20 = ______
68 − 10 = ______
6 × 10 = ______
48 + 10 = ______
60 + 20 = ______
51 − 10 = ______
78 − 10 = ______
75 + 20 = ______
38 − 10 = ______
5 × 10 = ______
13 + 20 = ______
97 − 10 = ______
2 × 10 = ______
25 + 10 = ______
88 + 10 = ______
79 + 10 = ______
53 + 20 = ______
89 − 10 = ______
