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
24 + 20 = ______
39 + 20 = ______
94 − 10 = ______
9 × 10 = ______
75 − 10 = ______
5 × 10 = ______
79 + 20 = ______
30 − 10 = ______
78 + 10 = ______
2 × 10 = ______
37 + 20 = ______
6 × 10 = ______
14 + 10 = ______
71 + 20 = ______
41 − 10 = ______
44 − 10 = ______
33 + 20 = ______
55 + 10 = ______
78 − 10 = ______
53 + 10 = ______
