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
54 − 10 = ______
49 + 20 = ______
21 − 10 = ______
79 − 10 = ______
27 + 20 = ______
55 + 10 = ______
78 + 20 = ______
31 − 10 = ______
38 + 20 = ______
56 − 10 = ______
79 + 20 = ______
5 × 10 = ______
50 + 10 = ______
18 + 10 = ______
20 + 20 = ______
7 × 10 = ______
25 − 10 = ______
88 + 10 = ______
40 + 10 = ______
38 + 10 = ______
