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
8 × 10 = ______
87 − 10 = ______
37 − 10 = ______
57 − 10 = ______
49 − 10 = ______
5 × 10 = ______
55 + 20 = ______
85 + 10 = ______
55 − 10 = ______
49 + 20 = ______
17 + 20 = ______
21 + 10 = ______
88 + 20 = ______
72 − 10 = ______
50 + 10 = ______
58 + 10 = ______
42 − 10 = ______
55 + 10 = ______
40 − 10 = ______
1 × 10 = ______
