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 = ______
9 × 10 = ______
8 × 10 = ______
73 + 10 = ______
4 × 10 = ______
94 − 10 = ______
21 + 20 = ______
72 + 20 = ______
51 + 20 = ______
67 + 10 = ______
78 − 10 = ______
60 − 10 = ______
61 + 10 = ______
47 + 20 = ______
3 × 10 = ______
81 + 10 = ______
33 + 10 = ______
75 − 10 = ______
55 + 10 = ______
66 − 10 = ______
