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
70 + 20 = ______
42 − 10 = ______
7 × 10 = ______
28 − 10 = ______
26 − 10 = ______
11 + 20 = ______
6 × 10 = ______
83 + 20 = ______
98 − 10 = ______
46 − 10 = ______
5 × 10 = ______
21 + 20 = ______
1 × 10 = ______
70 − 10 = ______
3 × 10 = ______
53 − 10 = ______
2 × 10 = ______
73 − 10 = ______
14 + 10 = ______
81 + 20 = ______
