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
80 + 20 = ______
88 + 10 = ______
1 × 10 = ______
85 − 10 = ______
64 − 10 = ______
49 − 10 = ______
28 + 20 = ______
41 + 20 = ______
8 × 10 = ______
61 + 20 = ______
34 + 10 = ______
35 − 10 = ______
2 × 10 = ______
44 + 10 = ______
78 + 10 = ______
7 × 10 = ______
61 − 10 = ______
92 − 10 = ______
3 × 10 = ______
74 − 10 = ______
